Tae & Miko - Work and live together. Kinda sorta dating each other, but apparently haven't officially kissed yet. Have both fucked Takako (Tae for chad reasons, Miko for indirect kissu reasons).
Takako - Works at Tae and Miko's office. Had sex with Tae & Jimiko, then sought out Rise in a want ad before dating her. Had revenge threesome with Kuyou and Manami after learning about Rise's infidelity and later developed side feelings for Kuyou.
Rise - Friend of Kuyou. Hooked up with Takako through a want ad before officially dating her. Fucked Kuyou out of confusion about what dating means. Later fucks Manami when seeking advice on her relationship with Takako.
Kuyou - Friend of Rise, daughter of Manami, classmate of Ito. Fucked by a confused Rise, followed by Ito after she peeps on the two. Then realises her love for Manami and officially starts dating her. Had threesome with Takako, which led to some side feelings.
Ito - Kuyou's classmate. Became sex friends with both Kuyou and Manami, catching on about their feelings for each other and blackmailing Rise to help hook the two up together. Starts dating Chika after Kuyou ends their formal sex friend relationship.
Manami - Kuyou's mother. Fucks Ito out of jealousy before she realises her feelings for Kuyou and starts dating her. Has had sex with both Rise and Takako to help reconcile their relationship.
Chika - Maid café employee and Ito's next door neighbor. Dates Ito following her kinda breakup with Kuyou.
Ai - Works at the same maid café as Chika and Ryou. Hard gay for Ryou and once raped her.
Ryou - Works at the same maid café as Chika and Ai. Developed a fear of women after Ai raped her, but was seemingly cured of this fear after her encounter with Miu.
Miu - Runaway rich girl(?). Was supposedly meeting up with someone before being caught by her stepfather, at which point Ryou rescues her. As thanks, she helps Ryou overcome her fear of women.