So, he is her fiance now...

Sona never thought that Masa would have fun with three fallen angels and lose his virginity. Instead, she thought that he was having fun in Kuoh City and that he had forgotten the time. 

Still, this was a good thing, she thought; after all, it showed that Masa could adapt to the human world, and while he might be reluctant to stay in the human world, it didn't mean that he showed rejection and considering how much fun he had, he might visit her more often. 

Regardless, Masa threw away the guilty thought within his mind since he had no relationship with Sona, and he was free to do most of the things. At the same time, he felt that he had done a good thing since he had stopped the fallen angels from losing their numbers further. 

Similar to the devil, the number of fallen angels was limited, and there were no new fallen anymore. An angel who couldn't reproduce would definitely stop any angels that wished to fall, considering the death of god and all. 

Instead of having Kalawarna, Mittlet, and Raynare killed by Rias and her group, it was better for him to manage them, right? 

"Yes." Masa nodded. "I tried many good foods in the city." Raising his hand, he showed the dessert he had bought along the way. "Do you want some, Sona-nee?" 

"Sure." Sona smiled and asked, "How about we enjoy it with tea?" 

"Okay." Masa agreed, then looked at Tsubaki. "Tsubaki, join us too." 

Tsubaki didn't immediately agree but looked at Sona, who gave her a nod. 

"Yeah, join us, Tsubaki." 

"Yes, Sona-sama, Masa-sama." 

It was a bit stiff, but there was no doubt that this was how peerage members treated their masters. 

Meanwhile, the way Rias treated her peerage members, that she even let her bare, naked body show before her servants, was weird. 

Or did she not even think of them as living beings that treated them like pets, so even if she was naked, it didn't matter? 

Frankly, Masa wasn't sure about Rias' thoughts, but there was no doubt that Sona's way of treating her servants was the most normal. 

Still, they enjoyed the low-calorie yogurt ice cream that was mixed with fruits and other things, which Sona and Tsubaki enjoyed so much as they talked about how Masa spent his days in Kuoh City. 

"When the weekend comes, I will guide you outside of the Kuoh." 

"Can we visit a theme park?" 

"I don't mind." Son nodded. "Is it due to your theme park plan?" As the little sister of Serafall, she knew that Masa planned to open a theme park with Miracle Leviathan as one of the mascot trademarks there.

"Yup." 

"Then, let's go to Tokyo later." 

"Is it okay? This country isn't fully controlled by us, right? There might be a youkai attack again." 

"It should be fine. I have talked about this problem with my older sister and friend, who is also the governor of this city. At this moment, she should have told her big brother about the previous problem." 

Considering the problem last night, it was normal for Masa to be concerned about them being attacked once again. 

Yet, unlike the angel, fallen angel, or exorcist, the people who were related to the supernatural world and mythical beings in this country would avoid the devil, but then again, there was an exception. 

Still, if that happened, Sona was prepared to kill all of them. 

"Oh, that's good, then." Masa nodded, then asked, "But you are not the only governor of this city?" 

"No, I am not. Rias Gremory, my friend, is also one of the governors in this city." 

"Rias Gremory, huh? Is it Riser's fiancee?" 

Sona was surprised and asked, "Do you know Rias, Masa?" 

"No, I just heard it from Riser." 

"Oh, you are close to Rias' fiance?" This was unexpected, Sona thought. 

"We're all high-class devils, and he is from the House of Phenex." 

"Ah, I see." 

Sona nodded since she knew the specialty of the House of Phenex, "Phenex Tears," the panacea that could heal anything. 

Riser might be like that, but it couldn't be denied that the benefit that came from being close to his family was great. 

Moreover, all of them were high-class devils, and to protect their interests, it was normal for Masa to have a good relationship with all of them, showing his qualifications as a capable leader of his house as he only looked at their interests instead of their feelings. 

Yet, even so, Sona could see that Masa was a gentle person and—

'It's too early...' 

They had only known each other for a day or two, yet even so, Sona didn't hate the feeling of being with him, and that was why she asked, "By the way, can you play chess, Masa?" 

"Chess?" Masa looked at Sona strangely and said, "It's not my favorite, but I can play." 

"Okay, let's play." 

"...did you even listen to me?" 

Instead of playing chess, which took up most of his time, Masa loved to work or train more, but considering he stayed in Sona's place, he thought to humor her since even though he didn't like it, it didn't mean he was bad at it. 

Yet, what he didn't know was that Sona had used chess as a requirement to choose her fiance. If someone couldn't defeat her in chess, then she definitely wouldn't accept that devil as her fiance or future husband. 

Still, sometimes, there was an exception, and even if Masa lost to her, she didn't really... wait, why did she lose so badly?" 

"I won," Masa said calmly.

"..." Sona and Tsubaki. 

Sona aside, Tsubaki was dumbfounded as she knew how good her master's chess skill was, and Sona had never lost! 

If Sona lost, then the one who won would become her fiance! 

Yet—

'Does he not know that?' 

Watching Masa's expression, Tsubaki wondered whether he didn't know that fact. 

Still, Sona took a deep breath and asked, "Sorry, can we play one more time?" 

"...okay." 

The two played once again, but the result was the same. 

"Sorry, once again." 

"...okay." 

Yet, it was the same, Sona lost. 

"Once again! Once again! Once again!" 

"Stop! Stop! I am tired! I am going to sleep, Sona-nee!" 

Masa had had enough of playing chess and quickly ran away back to his room. 

Only Sona sat on her chair, staring at the chess board in a daze until Tsubaki's voice woke her up. 

"Sona-sama..." 

"Well... it's already like this." 

Sona had a good feeling toward Masa, and he had won her so many times even if he didn't really like to play chess, so why should she hesitate, right? 

Yet, even so, she wasn't sure about his feelings, so she decided to wait for a bit, and frankly, it was nerve-wracking for her to start to make a move as it was her first time to feel like this. 

Still, if she looked in the mirror, she would realize the blush on her face was so noticeable. 

Nevertheless, Masa, who was thinking about sleeping, couldn't do that since he received a call from Serafall.

"Hallo~! Hello~! Masa-chan~! How is your stay in the human world~?" 

"Oh, Serafall-sama." 

"Call me Onee-chan!" 

"By the way, Serafall-sama, has Sona-nee told you about the problem that happened last night?" 

"Ah, did you call So-chan by Sona-nee? Have your relationship become so close in just a day?! Did you plan to have two sisters together?! Did you aim to have a "Shimaidon"?! Masa-chan, you pervert! Ah, but it might not be bad to have a threesome with So-chan, too." 

"Ah, um, can we have a serious conversation, Serafall-sama?" Masa decided to ignore the last part of Serafall's words since he wasn't sure whether she was joking or serious. 

"Something serious? You were just attacked by a group of small fries, right?" 

"Er..." 

Masa wondered what Sona told her big sister, but he told the truth and what he had seen last night, including his accident to meet with the fallen angels. 

"Fallen angels!" Serafall was dumbfounded and asked, "Did they do something to you?" 

"They did. They wanted to kill me, but I killed them first." 

As for Kalawarna, Mittlet, and Raynare, Masa decided not to tell them to Serafall. 

"That's great then..." Serafall sighed in relief. 

"Do you want me to erase all of them here?" Masa asked. 

"Can you?" Serafall knew how strong Masa was, so she felt relief to leave everything to him. 

"It should be relatively easy for me." 

"Okay, then. I thought of going there to clean up the trouble, but if you can, then please do it, Masa-chan." 

"Okay." Still, Masa asked his concern, "This won't cause you trouble, right?" 

"It's fine. They are the ones who pick up a fight first. We might try to avoid a war, but we are not afraid of war, especially.... how dare they attack So-chan?!" 

It was clear that Serafall was completely enraged when she heard a group of rodent youkai threatened to rape Sona and her group, including her. She might wish for peace, but if someone didn't know their place, then she would completely freeze them to death! 

"By the way, if possible, do it quietly, okay, Masa-chan? So-chan is at a sensitive age, and she might get angry at me if I ask your help to clean up the mess." 

"Leave it to me." 

"Thank you~! I will give you a reward when you go back~! Muwah~! Muwah~!" 

"Ah, um..." 

Still, they talked for a while before Masa rested, thinking that his day in the human world had so much trouble. Nevertheless, it was all good that everything ended peacefully, and at the same time, with Serafall's permission, he thought to be bolder to grow stronger. 

It was just on the next day—

"Masa!" 

Masa "coincidentally" met Asia.