School, university

Part 1
*The Student Council has their eye on Towa Aikawa the school delinquent. He hides out on the rooftop, it's his special illegal place. He finds Mikado Shirahane on the roof one day. He's the hottest, smartest guy in school.

Part 2
*After ups and downs and lots of deep things went between, now the delinquent Towa Aikawa is a very "deeply involved friend" of the Student Council President, Mikado Shirahane. But when Towa visits Mikado's house for the very first time, Mikado's elder brother thought he was Mikado's bed-mate...

Part 3
*Yukimura is the formidable VP of the student body. However, he has a past which he doesn't want to be discovered. The only person who knows about his secret is his childhood friend, Shinonome, the number-one problem student in the school! How far would Yukimura go to silence Shinonome!?

Part 4
*Ever since he had sex with his childhood friend, Shinonome, the uptight Student Body VP, Yukimura, felt he was caught in a whirlwind. He found himself invaded by Shinonome in his own bedroom, in the library, everywhere?! Out of desperation, he found his only defense was to treat Shinonome coldly so he could keep his sanity intact. However, it only pushed Shinonome to go to the extreme?!! Will the head-strong, stubborn VP finally come to terms with his feelings?!?

Part 5
*What on Earth will happen when a few teen's enter into an unexpected drunken state?
Short special including Warui series character plus an extra at the end.
1. Towa X Mikado's Story
2. Yukimura X Shinonome's Story
3) Aikawa Family Extra

Part 6
*Despite the content of their relationship, the delinquent Towa Aikawa is still a "friend" of the Student Council President, Mikado Shirahane. But today, Towa gets to sleep-in at Mikado's house for the very first time! Could their relationship advance into "lovers" now...!?

Part 7
*Nanao Shirahane is notorious for being a male siren, able to lure in and 'slay' any man simply upon his will. And while these rumors hold no truth, Kuon Aikawa, a fellow student attending the same university, still can’t help believing them and despisin.

Part 8
*We’re back to first couple (Mikado x Towa). Towa still don’t understand what their relationship is. Towa starts a part time job and distances himself from Mikado.
*Towa is the younger brother of Kuon and Mikado is the younger brother of Nanao.
*The other couples so far are also seen.

Part 9
*This is the sequel to Koi ja nai kedo. The relationship of our main characters is question by Yukimura Shuji himself wondering what type of relationship he have with his partner Shinonome Ryuichi.
*This also Includes "Warui ko Tachi no Bansan" -- Towa & Shinonome getting some drinks

Part 10
*Akira and Nanao go on an vacation to a spring house. While there Nanao bumps into a old friend. Akira gets jelous and teaches Nanao a "lesson" (if you know what I mean *wink *wink). Nanao's friend goes to Nanao's and Akira's school to talk to him.