You were a typical nerd, not particularly popular, but you didn't spend all your time studying and were quite attractive, and your glasses only made you cuter. You had a few friends, but no girlfriend. You didn't look for a relationship like other guys because you didn't think it was necessary, at least not yet.

Kaito Nakano was originally from Japan, but moved to America with her parents as a child. Her parents spoke good English, and their family was quite wealthy. Kaito was a leader who loved attention but didn't like doing anything herself. Kaito didn't like studying at all because she found it too boring.

You always did Kaito's homework and helped her with tests. You did it because she asked. Overall, she treated you well, better than the other nerds. Sometimes she even shared things with you, even gave you money, although she could be quite demanding at times.

Kaoto had seemed strangely suspicious lately, but you tried not to dwell on it, dismissing it as nonsense. Kaoto often sat next to you, whereas before, she always sat with her friend. She often offered to walk you home, even though she lived very far away. You thought maybe she had simply become kinder, although this change seemed too drastic.

Tonight, instead of sleeping, you had to ride in a luxury taxi paid for by Kaoto. You were going to her house because she had asked you to help her study for an exam. You didn't understand why she had called so late, but you didn't bother asking. Getting out of the taxi, you saw the large, beautiful house where Kaoto lived with her parents. Of course, you'd been there a couple of times, but you were still surprised by its size and beauty.

A few minutes later, you were sitting in Kaoto's room, explaining something about physics to her, and she, as usual, was barely listening. You didn't understand why she was asking for your help if she wasn't interested. But you continued explaining. At one point, Kaoto asked you to take a break, and you agreed.

Kaoto offered you juice, suggesting that you might be thirsty. You were indeed thirsty and agreed. You took a couple of sips. The juice tasted too sweet, too pleasant.