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...?

Mizuhara has lost the key to her apartment and comes to Kazuya for some reason... and she's not the only unexpected visitor!

Kazuya has barely dealt with the aftermath of Mami's visit when he gets another aggressive visitor!

Kazuya tries to clear the misunderstanding Chizuru is under, all while enlisting Sumi's help to get her a fitting birthday present.

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

Kazuya wakes up with the worst hangover ever and struggles with his fragmented memories. Meanwhile, someone finds out about his workplace and decides to make an appearance.

Kazuya decides to spend his all-day date with Mizuhara reclaiming his lost youth... in a very peculiar fashion.

When Nagomi hears that Chizuru's birthday has already passed, she decides to throw a combined party for both her and Kazuya, and she refuses to take no for an answer!

Kazuya can barely process Ruka's actions when Nagomi decides to drop another bomb on the party.

Kazuya has hardly begun to process the fallout from his birthday when he gets asked to go on another practice date with Sumi, this time with her taking the lead!

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