Kanojo Okarishimasu 31 Summary was translated by BakaData.com
Mizuhara and Umi look like they are about to kiss each other and Kazuya tries to stop them. He falls to the ground and Mizuhara sees him. He says they were close to kissing each other, but she explains that Umi just adjusted her earring. Kazuya explains her boyfriend Umi is a bad guy that tries to take advantage of her.
Mizuhara says that Umi isn’t her boyfriend and that she’s actually an actress. She works as a rental girlfriend because it costs money to go to an acting school and it also helps her with her acting skills.
Umi has to go but Kazuya asks him what he was talking about in the washroom. Umi was talking to a director and was recommending Mizuhara for a role.
Mizuhara calls Kazuya an idiot. But Kazuya explains that after thinking that she’s getting fooled by a bad guy, he couldn’t just ignore it. He apologizes and feels pathetic for acting like he’s her boyfriend. He’s amazed that she’s an actress and realizes that they are living in 2 completely different worlds.
As he looks depressed, Mizuhara hands him a smartphone case she purchased for him. She says that she feels bad for pushing the responsibility to keep their secret from everyone else. So it’s a sign of apology and not a present.
Kazuya starts to cry as he never received a gift from a girl in Christmas.
As they are going home, Mizuhara tells Kazuya to take a different train than her. (She doesn't want to go home with him)