School

Kei, a hot transfer student from the U.S., mistakes Yuri for a girl. Even when he realizes Yuri's a guy, he won't stop making passes at him!

Highschool

Himari Uehara, for a first-year high school boy, knows very little about sex. Without his father at home and having skipped health in middle school, Himari is only confused when he wakes up with his boxers a mess and has no one for advice. Luckily, Himari has Gaku Asada, a new friend from high school who offers to teach him everything and more he missed out in health class.

Nagata Shingo plays cupid in school by investigating the target of affection. He finds out what their ideal type is, their favorite food, gives advice when needed and receives food as a reward.

One day, a group of girls who are attracted to "ice princes" ask him to find out the cause of the huge scar in the forehead of the cold Ao.

Totoki, a delinquent by circumstances, has fallen in love with Yoshizawa who is the only person to ever show Totoki any kindness. And, while Totoki is too shy to confess his feelings and always ends up running away, Yoshizawa unexpectedly takes the lead?! What will become of the two now?