Season 1

Sexually involved with five different men, office worker Momoe falls for one of them. But she's surprised when he tells her that he has a girlfriend.

Due to emotional trauma from his cheating ex, Hayashi declares that he can only be with a virgin. Matsuda applies his expertise at manipulating women.

Studio Delta team leader Hiyama falls for an escort, which proves expensive. Momoe starts thinking about hobbies and Hayashi sets up a dating app.

Hayashi considers meeting Nagi despite what he learned, leading him out of his comfort zone. Momoe outlines the various types of guys she sleeps with.

Locked in the stockroom together, Momoe and Matsuda struggle to resist their urges. Unconcerned by Kokoro's games, Hiyama allows himself to be played.

Momoe reflects after a disappointing night with her favorite guy. Valentine's Day gets everybody stirred up about giving and receiving chocolate.

Receiving a golden opportunity to be a cartoonist, Hiyama faces a predicament about his time with Kokoro. Ume invites Momoe to a lesbian bar.

Momoe uses a dating app to hook up with an inexperienced guy who soon misunderstands their arrangement. Matsuda talks about a girl who got away.

Still undecided about Nagi, Hayashi can't help but notice his new attractive neighbor. A coincidence causes Momoe to spend some time with Nagi.

Newly published cartoonist Hiyama lies to Hayashi to hide his lack of sexual experience. Sad that her date has been canceled, Momoe asks out Matsuda.

Marriage is the hot topic at Studio Delta as some long to be wed and others try their hardest to stall. Big news arrives during a work hot pot party.

Momoe and Matsuda awkwardly bumble around his apartment until they end up sharing a bed. Hiyama tries to talk with Kokoro but she changes the subject.