Feeling that one shouldn't have

While Mizuto knew that his face was a source of trouble, it was also a source of his happiness, so he wouldn't complain about it. However, after that incident, everyone no longer stayed in the club and went home on their own. 

With the clubroom, it was easy for them to get his comfort, so there was no need for him to go to their house. 

Well, in Akatsuki's case, she still wanted him to visit her house, so Mizuto would do so since there was a certain novelty when he stayed at her place, but he wouldn't go now as he had a place that he had to visit. 

After they separated, Mizuto walked out of the school to the familiar neighborhood, where the bookstore of one of his lovers was. 

"Yuu!" 

Mizuto entered the bookstore as usual and searched for the cute figure who had been swayed by his seduction. Yup, he knew he was wrong toward Yuu, but he couldn't help it since he knew that he had to take responsibility for his actions.

Still, even if he did nothing at that time, he had a feeling that something might happen between them since he knew that she was the closest to him. 

Unlike Yume, who got close due to their relationship as step-siblings, Mizuto got close to Yuu during his separation from Yume. He spent most of his time studying during the third middle school year, and that year... he got to know Yuu. 

So, from this, Yuu should be more special, right?

Yet, was it the work of fate that it had to be Yume?

Unlike when he was with Yume, he never hesitated when he was with Yuu, even if the price was the destruction of their relationship. Yet, unlike before, he had to admit that he had changed, and he no longer had a doubt in his mind. 

So, after he had a foursome with Akatsuki, Reina, and Akatsuki, flirting with the members of the student council, he also almost made one girl whose heart should belong to someone else sway to him; he decided to visit another girl during his trip before he went home. 

However, the person who greeted him in the bookstore wasn't Yuu, her mother or grandmother, but her older sister, Koitu Rei.

"Rei-nee? Why are you here?" 

Rei, who sat at the cashier, looked at Mizuto speechlessly and asked in an annoyed tone. "What? You don't want to see me?" 

"Of course not. I am happy to meet you." 

"Hmph~!" Rei snorted, thinking that this must be how Mizuto seduced her little sister into giving him fellatio. 

"But then again, you often said that you didn't want to work here because you didn't receive much of a salary and had your own part-time, right?" 

As a member of the family, it was impossible for Rei to ask for more salary from her parents when she worked at the bookstore. Moreover, even if she got the salary, her income should be in the shape of pocket money. 

Naturally, as a university student, she could not rely on her family's pocket money. After all, unlike high school students, university students' expenditures were much higher, and more importantly, the cost of studying at a university wasn't cheap either. 

This was why those university students relied on their sugar daddies to take care of them. 

Jokes aside, in Rei's case, she worked in a restaurant, and that was also the reason why she rarely stayed at home to take care of her family's bookstore. 

"So, where is aunty and grandma?" Nevertheless, Mizuto asked where her family was since it was rare not to see the mother and grandma. 

"They went to visit the family and only came back later at night." 

"Oh..." Mizuto nodded, ignoring Rei's subtle gaze. "So you were told to work?" 

"Yup." Rei sighed helplessly, but she didn't have much to complain about since she often helped the bookstore like Yuu. Still, she looked at him curiously and felt that this boy, who often played in her house, had changed so much. She might not have thought much before since she knew that Mizuto was Yuu's friend, and as a new student at the university, she was still excited about many things, so she rarely paid attention to the matter of the house. 

Yet, Rei had seen Mizuto's growth, from how he would make a lot of money by selling his thesis to lazy university students, which made her speechless as she had never thought that such a thing was possible. 

However, unexpectedly, according to her friends, it was something common, and the money was much, much more than working part-time.

It might seem materialistic of her to think about how much money Mizuto could earn, but as a university student, Rei saw many things that were usually hidden when she was in high school, and she also started to learn the importance of money. 

Yes, Mizuto might be handsome, but Rei couldn't show an interest in the third middle school student, right?

More importantly, she also had a boyfriend. 

Yet, in just a year, Mizuto would grow into an existence like this.

Watching his handsome face, Rei thought that many of her friends would pay money as long as they could get their hands on him. Still, she wasn't going to fall so low that she would make money by using her little sister's man. 

Still, the boy, who often went to her house to read at the corner of her bookstore, had grown so much. 

Rei felt conflicted, especially when she thought about what Mizuto did with Yuu in Yuu's room. 

At the same time, she realized how much she suppressed her feelings and how she realized that she often tempts him subconsciously. Whenever he came, she would try to insert her place between him and her sister. She even baked him a cheesecake, which she found quite troublesome to make, yet she was good the most. 

Frankly, if she didn't have a boyfriend, she knew that she might do something unforgivable. 

No, the moment she let herself allow this feeling to enter her heart, she knew that she had done something unforgivable. 

Yet, she knew he couldn't be hers since her little sister was waiting for him. 

"Mizuto." 

"Yuu." 

Their talk quickly stopped when Yuu came. 

"Did you just come?" Yuu asked curiously as she walked toward him. 

"I talked to Rei-nee. She asked me about our trip to Lake Biwa." 

"You asked that, Nee-chan?" Yuu looked at Rei curiously and asked, "Do you want to take a trip with Hiro-kun (Rei's boyfriend)?" 

"Well, probably, I am not sure, though." 

How could Rei say that she was just slightly jealous of Yuu, who was taken on a trip by Mizuto?

"By the way, where is my book?" Mizuto suddenly asked. 

"Oh, it's my room. Come in." Yuu somehow blushed, but she hoped that Rei didn't notice it. "Then, Nee-chan, we leave first." 

"See you later, Rei-nee." 

As the two left and entered the house, Rei let out a helpless sigh, wondering whether Yuu would be eaten by Mizuto.

"...." 

Rei fell in silence for a while and decided to close the bookstore early since she knew she had to watch her little sister in case something "big" was happening.