Ryou has always had big breasts and because of this, she always gets targreted and eyed by men and perverts. One day, on her way home from school, she gets attacked by a pervert and this handsome guy rescues her. Just one look at this guy that rescued her and Ryou takes interest in him.
The next day, Ryou's mom tells Ryou that she got a tutor for her. And to Ryou's suprise, it's that guy that rescued her from the pervert! His name is Masaki. Masaki starts to tutor Ryou and she learns that he's a pretty serious guy. After some intense studying, Masaki suggests going out for a walk. As they are walking, they pass by the high school, Kouyou, that Ryou wants to go to. Masaki suggests sneaking in so Ryou can see what the school looks like. Ryou gets excited and agrees to do so. While they are sneaking aroud the school, Ryou gets scared of the wind and goes into Masaki's arms. Masaki holds on to her and Ryou's heart is beating wildly. Then Masaki tells her that her breasts are so huge and that he can feel her heart beating. Ryou gets embarassed and pushes him away. Masaki hits his head on the desk and Ryou runs out. She can't believe that Masaki is a perverted guy! She gets out of the school, but Masaki is right behind her! She shrieks and Masaki calmly tells her to stop shrieking because the neighbors will misunderstand. Ryou calms down and tells him to not say "breasts" so nonchalantly anymore. Masaki coldly tells her that she has some issues too because she came to some dark place with some guy she just met. Ryou gets mad and can't figure out his sudden change of attitude.
The next time Masaki comes to Ryou's house, he is cold to her again and Ryou can't bear it. She tells him that she likes him and that she doesn't care if he goes back to his perverted character and that maybe she likes that after all. Masaki gets mad and tells her that he'll always be the same. He starts to walk out and tells her that if she wants the perverted Masaki, he'll have him come to her house next time. He goes on to tell her that they have different hairstyles now, etc. and Ryou is confused. As Masaki opens the door, a taxi pulls up in front of Ryou's house and "the other" Masaki comes out of the taxi. Masaki explains that the guy she snuck into Kouyou High School with was his twin brotther, Shingo!
