From SuBLime

Volume 1:
1-2. Don't be Cruel, Please & Don't be Coldhearted, Please
"In exchange for me keeping your secret, take off your pants." Maya saw Nemugasa's sudden impulse to cheat on a test. In return for keeping silent, Maya makes various demands, but? The bookworm Nemugasa and the playboy Maya's perversions, impatience, and pure-hearted love.

3. Houkago no Himitsu (Afterschool Secret)
   Sequel to one of the side stories in Tsuyogari. Shiba Keisuke still loves his friend Aki and gets in trouble for daydreaming about him during class. They still desire to go further in their relationship, but when it comes to figuring out who should be on top, it's time to play rock-paper-scissors!

4. Wagamama mo Aishite (In Love With Your Selfishness)
   Daijuu is a popular guy with a really moody and selfish boyfriend, Kan. Unfortunately, Kan's selfishness drives them to fighting, and to Kan wanting to be in control of their relationship, leaving Daijuu to try to take control as well.

5-6. Pantsu de Ojama (Mischievous Underpants) & Sailor Fuku wo Nuganaide (Don't Remove My Uniform)
Soramoto is bothered by the fact he's wearing briefs when he goes home with his sex-friend, Hoshina. The reason for his embarrassment? Not too long ago he made fun of Hoshina for wearing briefs despite being a high school student, and has a great fear of being picked on for the same thing.

Volume 2-3:
Maya and Nemugasa's story continues...

Volume 4:
Maya and Nemugasa's relationship faces new challanges as they become university students. Also story about Jutta (Maya's cousin) and his relationship with his teacher.

Volume 5-6:
Maya is being scouted by his university senpai and goes to part time job.