Houkago no Katasumi, Kiss no Zanzou.

Chisa's boyfriend, Masa, is feared due to his appearance, though he is kind. Sayuki, who has never had a boyfriend, begins dating her older, popular cousin Takumi. Ayano wakes up in the bed of Kagura, the son of a yakuza, wearing only underwear. Chiri, tired of only seeing friends, is approached by Eiji, a friend's crush. Himeko, working as a maid due to financial struggles, is suddenly embraced by a mysterious man. Aki shares a bed with Sakamaki, the school's most notorious playboy, and questions her status as his girlfriend while his kiss marks fade.