1st chapter -> Mikado Shirahane and Towa Aikawa - brothers of Nanao Shirahane and Kuon Aikawa - beginning of relationship first year with council president - ch 1-3
2nd chapter Aikawa Towa + Shirahane Mikado
3rd ch - Vicepresident - friend of Mikado and a friend of Aikawa are childhood friends, VP was a deliquent because on middle he was treated like a girl and almost kidnapped, the deliquent blackmail him to kiss him and they end together
4th ch - vicepresident + deliquent childhood friend
5th chapter - towa aikawa + mikado shirahana
6th chapter - very good - there is a fame Nanao can seduce any men - he loves one college classmate Aikawa Kuon who is straight and forcibly sleeps with him and Nanao is told Aikawa hates him, then he is calmed by a teacher who later forces Nanao to mouth him and then comes Aikawa and they make up, Aikawa is very possesive and jealous and tries to keep Nanao safe
7th chapter - Towa Aikawa + Mikado Shirahane (council president) - Towa is behaving a little weird, starts a part-time job to disturb himself from thinking all the time about Mikado, is dumb and doesn't get it that Mikado is jealous
8th chapter - sequel to Koi ja nai kedo!
9th chapter - sequel to Mujihi na Otoko 1 - is about some jealousy of Aikawa, Nanao has some traumatic troubles from past - meets his first lover who said Nanao seduced him and that is why he had sex with him not that he loves him - and doesnt want to worry Aikawa who takes Nanao's secrecy bad and is jealous
10th chapter
I Want To Be Naughty!