1) Don't Underestimate Me!
Aisaka tends to get in a lot of fights and Tadaka is the school playboy. On a chance meeting where Aisaka gets beaten to a pulp, Tadaka offers to carry his bruised body home. There, Tadaka makes a deal with Aisaka that if he doesnt fight they'll have a sexual relationship.
2) Strange Lover
Masaru and Sugeru are identical twin brothers. Sugeru tends to enjoy using his brothers name to chase skirts and Masaru is the one who always gets the beatings when people come looking for revenge. Its not TOO much of a problem until Masaru meets Masato. A nice guy who really loves Sugeru (who's just using him for money), and it wouldnt be a problem if Masaru wasnt falling for Masato himself.
3) My Heart Really Hurts
Koike an average student is best friends with Jinnai, a student who excels. When they get into separate universities Koike still cannot forget what he felt for him, so when Jinnai comes around for a visit Koike jumps on his chance to tell him how he re