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Strength of Will (A BNHA x Undertale FanFic)

After Frisk finally managed to bring peace to her universe a certain glitchy skeleton appeared out of nowhere and erased it from existence, but luckily the goddesses Fate and Destiny found her Soul and decided to let her reincarnate, what will Frisk do? And will she be able to stay a pacifist... (I am not a native english speaker, so please forgive me for any spelling mistakes, this is also the first novel I am writing, so don't expect high quality stuff, this is just going to be some half-assed story, that I am writing because of quarantine, and I repeat DON'T EXPECT QUALITY! Btw obvious DISCLAIMIER, I don't own BNHA or Undertale and the cover art was made by Patzzi and reedited by Solunary.)

HopelessHikikomori · アニメ·コミックス
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116 Chs

Side Story: Convincing the Parents

Rumi and Fumio were currently driving to Fumios old home. It was finally time for the couple to ask their parents for the permission to marry. Both were extremely nervous at the prospect of introducing themselves to their parents in law.

The drive to the old Seigi Residence was a bit tense and so the couple barely talked to each other.

"So, how are your parents, Fumi?"

"Oh, how they are? They are a chill pair, bit goofy though. I don't think we need to worry about my parents accepting you, but still I am still nervous. With, you know they don't know about you yet and I am already going to tell them that I plan to marry you, you understand, right?"

"I wouldn't want it any other way, would be pretty boring too if they just accepted me like that. Fumi, you are a great woman and if I were your father, I would better make sure that you are in good hands, I wouldn't care if the person in front of me is number five, four or one! I would damn make sure that you would be happy with the person."

"I think my father is going to react just like that. Oh, and be warned he can be a little intimidating, so don't get to scared off, of his presence, all right?"

Rumi just laughed at the prospect of someone being to intimidate her. Who was she? A professional hero and not any professional hero, she was Japans number five, Mirko.

"Hmpf, girl, you know who I am? I am Mirko, tough as heck and honest to a fault! I ain't getting scared of some old geezer."

Fumio laughed at her fiancée's reaction, she wondered how long she is going to be able to put on that though facade.

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Rumi was currently sitting alone in front a low table. Sitting in seiza in a tatami room, she didn't really know how it came to this situation.

The couple arrived at the old couples' house. They were of course happy about the surprise visit of her daughter. She was treated as a friend at first, they sat in the living room, chatted, drank some tea.

It was a pleasant atmosphere and the old couple apparently liked her, just as their daughters' friend though.

The moment they dropped the bombshell of their relationship and the moment they told them that they were planning to marry each other was the moment were the atmosphere made a 180.

It was the second time in her life Rumi felt this scared, the first time was when she had to defeat a villain in the tender age of ten years to defend her life, but this situation in front of her...

...it was ten-times worse than that past feeling. The old-man radiated an aura of experience, an aura that showed to Rumi that the old-man experienced many hardships in life and he overcame them all, just making him stronger than before.

The moment the atmosphere died was the moment were all pleasant chatter was drowned and Rumi sat sweating in front of the man. She sweated buckets and avoided his gaze, she didn't know why, but her gut told her to not mess with the man in any way, if she did, she would be deadly screwed.

Fumio seeing her lover be in such a pinch wanted to say something to her father, but she was stopped by her mother.

"Fumio, dear. Rumi is going to be the 'male' part in the relationship, right?"

Fumio started to blush intensely at that question, but shook her head immediately to calm down. This was definitely a serious situation and she couldn't hesitate now.

"I don't really know, Rumi is tough and brave and all, but it seems she gets easily flustered around me, so I guess we both play the rather feminine passive role in our relationship?"

Her mother nodded, before thinking again.

"Well, regardless of who is the 'male' or the 'female' part, who is going to marry in who's family?"

Fumio, looked at her partner, who was still sweating buckets, and asked her with a gaze if they should continue to stick with the plan. Rumi nodded in confirmation.

"We originally planned to keep our surnames, I mean she doesn't want to be 'Seigi Rumi' and I don't want to be 'Usagiyama Fumio'. We really kind of just want to marry, because I can't imagine living without her anymore and she is just the same as me. We kind of want to get our relationship at the next level and I wanted to have someone at my site that could be the perfect role model for Akane. On another note, the two of them understand each other really well and they act somewhat similar then they are around each other. I really want a partner that Akane would love just as much as I them."

The mother nodded, she was genuinely happy seeing her daughter this happy and she saw how honest (and a bit naive) she was, she was ready to accept Rumi as her daughter in law, but her husband was a completely other thing.

Seeing that his wife was finished with the discussion with her daughter and that she seemingly already accepted the girl besides his daughter to be in law, he prepared to have a long and intense talk with said partner.

He stood up and said with a glare to the girl.

"In the tatami room, wait there. I am going to be there in 15 minutes."

And now she was here in the tatami room, still sweating buckets, it has been minutes since she arrived in this room and 22 minutes since he made the promise to come in 15 minutes.

The sweating intensifies as she thought that Fumios father didn't even plan to give her a chance, but then the door was slid open, revealing Fumios mother, this made Rumi even more nervous, but she saw the tray had some cups on it, which had some hot tea in it.

The woman placed a cup in front of her, gesturing her to drink it. Rumi hesitantly grabbed it.

"Still nervous, girl? You don't have to be, my husband just wants to make sure you are a suitable partner for our daughter, you understand, right?"

Rumi nodded.

"Of course! If I were Fumis father I too would check if the partner is suitable! After all, I wouldn't want that someone as her would get into a relationship she would later regret in her life! I still am doubting myself to through with all of this, I still think I am not a person deserving someone as great as her! She is beautiful, intelligent, precise, cunning, doesn't leave a probability for her enemies open! What am I? I am just a woman that relied on brute force all her life, I got in many fights and brawly, way before I was a hero and even now still get heated and act impulsively! Heck, the reason I met her was because I beat up some corrupt dude up the ladder without a second thought! That guy almost ended my career from now to then, I am pretty sure it wouldn't have ended with me just losing my license! I am sure he would have used his authority to get more out of me, humiliate me more and more, making it impossible for me to find a job anywhere, somehow making me sign a suspicious contract that would practically make me a slave, and turn me into one of his toys!"

Rumi was trembling very hard at this point, clutching herself and breathing irregularly. The woman was worried about the girl and tried to calm the girl down, but she then continued to start talking again.

"But luckily, I found Fumio, after getting the recommendation from one of my hero colleagues. You know, in the past I thought it was a weakness to rely on other people, but I was scared at the prospect of my bleak future. That asshole looked at me with lustful eyes, taunting me, mocking me, as if knowing that even if I tried killing him, he would somehow get out alive to drag me deeper down, even faster because that would be the second time, I assaulted him. He knew that I am mostly brawns than brain, he knew that if he schemed long enough, he would get me to a position he wanted me to be. So, I contacted Fumio, at this point I was pretty desperate, no lawyer wanted to accept a contract from me, I don't know if that was me being paranoid at that time, but I saw the same lustful eyes in them, as that corrupt bastard had to me. I was sure I would get another decline, but..."

Rumi stopped trembling the moment she thought about Fumio, her mother seeing this was convinced that the girl in front of her truly wouldn't want to live life without her daughter anymore.

"...she accepted the case, she didn't care about what would happen, nor did she care of the possibility to make an enemy of someone high up the ladder. She accepted the case with a confident, beaming smile. A ray of hope appeared before me, at that moment I thought that I could get away with a fine, oh boy was I wrong. I got so much more than that, at first, she got me out of my problem, we all thought it was over, but then it happened, she opened a new case, presenting all the dirt that was on that guy. It took a while and the lawyer of the opponent was in no means an unexperienced scrub, but after weeks of battle she won the case. She even got that guy into Tartarus! As I saw her victorious on that day, my heart kind of skipped the beat and I think that was the first time I fell in love with her. But I was too shy to talk to her, after I saw how tired she was after a trial, we talked for a bit, finding out that we knew each other from the past, but then we had to part ways again."

A moment of silence and melancholy was in the air, as Rumi clutched her chest, even a couple of tears coming down her eyes.

"I got my license back, could continue to punch bad guys face in and even got a massive compensation after a trial. I should have been happy, but my life felt blank, as if it missed something, as if I tasted salt in my meal for the first time in my life and returned back to the blank meal without salt. A couple of weeks passed and I couldn't bear to continue on like that, so I went out to the mall to buy some stuff, maybe having something brand new could cheer me up, but then I saw her there with a cute little girl. It was her and her daughter Akane, I was scared for a moment. Scared that I might have tried to pursue a wife that already was in a happy marriage with her husband and her daughter. But I still went after her, even if she already was married, I could at least have been her friend, just being close with her would be enough for me."

The tears started to flow more and more as she talked.

"So, I talked to her and acted if I didn't know that it was her daughter beside her, they didn't really look similar at all, but I just had a gut feeling that they were mother and daughter. I acted oblivious asking her since when she was married and was pregnant to have a three year-old-child, the relief I felt as she said that she wasn't married and that she adopted the girl on the day after the trial."

Rumi wiped the tears down with her sleeves and inhaled to calm down again.

"Please Ms. Seigi, I might be a bit stupid and impulsive, but I can promise you that I will make Fumio happy with all I've got, I don't care about my job, my family, my own life as long as I can be with her! So please, allow me to get your daughters hand in marriage!"

The woman just chuckled and Rumi just looked at her in confusion, after a moment of perplexity she waved, symbolizing for someone to come in.

"Dear, I think you heard enough, you should come in a look at your new daughter-in-law directly in the face."

The door was opened, revealing a crying Fumio and her father standing beside her, seemingly nodding in acknowledgment at Rumi. He sat down and looked at her.

"Hello, I am Seigi Masanori."

He extended his hand over the table for a handshake.

"Welcome to the family, Usagiyama Rumi, I hope you are going to keep your promise. I am willing to give you Fumio, but never make her sad, or you will feel my wrath!"

Rumi took the hand and smiled beamingly.

"Yes, I promise you that I am going to do my best to make her happy, father."

Masanori smiled at the response, his new in law was acceptable for him, for now. He hoped that from now on his impression on her would just grow.

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In Fumios old room:

"You know, I am kind of disappointed to see your old room be so bland."

"What did you expect? As I moved out, I took all my belongings with me, old photo albums, my milk teeth, various projects I did for project day in school and various things of sentimental value. They are still in the house I now live in, if you want, I can show you all of it."

Rumi just nodded. Silence was in the room again. Fumio felt a bit uncomfortable, so she fidgeted a bit, but that question couldn't leave her, so she decided to ask.

"You, Rumi?"

"Yes, Fumi?"

"You were in love with me since that day?"

Rumi felt awkward, she turned around so Fumio couldn't see her face, she blushed.

"Maybe? I just didn't think about that as love in that moment, but yeah I felt affection towards you."

Fumio smiled. The smile turned into a smirk as she decided to tease the bunny.

"Really? But seriously? You tried pursuing me, no you even kept on, even with the fear that I might have been married? You acted oblivious, just so you could have approached me? My, my what a naughty girl. What would you have tried if I really was married? Don't tell me! You wanted me to cheat on my potential husband! You wanted me to NTR him! Ara, ara, what a naughty little girl my wife is."

Rumi was getting flustered as she heard those words, she wanted to turn around and push her down, to show who is in the dominant role, but to her surprise, she just saw an arm blocking her way. Fumio balanced herself out in a way that if Rumi tried pushing her down, she would just ram into an arm, lying defenselessly on her back, giving the opportunity to get pushed down herself.

And that happened, Fumio was now on top. Rumi was flustered and turned her head around, but Fumio just tilted it back.

"Don't lie to yourself, my cute bunny. Admit it, you want to play the role of the helpless maiden yourself sometimes."

She wanted to deny it, but her lips were sealed with a finger.

"Don't say anything, the fact that you fell in love with me for the first time in the moment I crushed that corrupt jerk says everything about you."

She started to blush even harder know.

"Don't worry, my cute bunny. I am the older one of us, right? Let onee-chan take care of your desires, I'll promise you, that I will be very careful with you being a virgin and all."

Rumi started to get steamy upon hearing these words, she was beyond turned on now, and so was Fumio to be honest.

Slowly undressing each other, the two of them got into the mood to do naughty stuff and so the two started kissing each other intimately.

They got more and more into the mood and their moans started to get louder...

...until they were too noisy and the parents called out to them.

"Jesus Christ in Heaven! Can't you do this stuff quieter! We want to sleep!"

"HAHAHA! My daughter is the dominant role, who would have thought that Japans number five turns into a meek girl when you two 'play around'."

The two of them got extremely embarrassed, dressed themselves up again and went to sleep, of course they won't get much sleep with the pent-up frustration in them.

A bit of Lemon for you degenerates ( ͡° ͜ʖ ͡°) ...

What do you mean I blue balled you and the yuri couple? Of course I did, it wouldn't be funny in any other way!

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