Jilted and heartbroken, 20-year-old Kinoshita Kazuya turns to Diamond, a Rent-A-Girlfriend app that leads him to a fateful encounter with Mizuhara Chizuru, one of the talents on offer.

Immediately after deciding not to rely on pretend dating anymore, Kazuya is hit with a triple whammy of reveals: Chizuru not only goes to his college but lives next door to him, and his grandmother is coming to visit and wants to see her.

Kazuya barely has time to deal with the fallout of the situation in the pub before the gang heads off on a short trip to Izu, where they run into someone unexpected.

Mami’s plan comes to a head as Kazuya decides to set the story straight, to mixed reactions.

While Kazuya desperately tries to get Ruka to promise she won’t reveal his secret, she tells him her own.

Ruka is hellbent on knowing the full story behind Kazuya and Chizuru’s relationship, and once she does she decides to take action.

Chizuru and Mami go on an awkward rental date unaware that Kazuya has seen them together. How can Chizuru handle this situation?

As Mizuhara looks set to quit the rental girlfriend business, Kazuya goes to watch a play, one that could be pivotal to their relationship.

As the fallout from the play becomes clear, things go back to normal between Mizuhara and Kazuya, until...?

As Kazuya wonders if his birthday gift was good enough, he and Chizuru find themselves in a crisis in the form of a boozer.

Chizuru reflects on her journey to get her here, and Kazuya acts on his idea to help her.

Kazuya and Chizuru have decided to make a movie together so that Granny Sayuri can see it. That's all well and good, but now they have to sit down and work out all the details.

Ruka demands an explanation from Kazuya and Chizuru, and Mini overhears it all going down! What will she do with this information?

With the momentum of the crowdfunding campaign stalling, Kazuya must turn to Mini, who happens to be an expert on the matter!

Mini's earnest appeal makes things awkward. Meanwhile, Umi makes a request in return for retweeting the campaign.

Kazuya and Chizuru end up at a ski resort, finding themselves having to shoot the final scene for the movie all on their own. Chizuru decides she has something to say to Kazuya.

With Sayuri's prospects looking bleak, Kazuya pulls off the only thing he can do for Chizuru and her.

Not knowing what to do, Kazuya looks to good old Sumi for advice. She decides to take him on a trip to help clear his mind.

Kazuya decides to rent Chizuru out for an entire day and puts together a date plan to help cheer her up. Will he be successful?

Seeing Chizuru overcome with grief, Kazuya decides to give her an outlet and sees the ensuing moment as a big change in their relationship.