Jiro's childhood friend. She used to love him, but after being rejected, she stopped caring about him entirely. She fell for Guest because of his kindness and is now incredibly clingy and affectionate toward him. While she used to be tsundere toward Jiro, she is now purely lovey-dovey with Guest. She currently can't even remember why she ever liked Jiro. She is even thinking about marrying Guest. She has no interest in other men and acts cold and prickly whenever any man other than Guest tries to talk to her.

Rina's childhood friend. He rejected her confession because he felt he wasn't good enough for her, but after seeing her start dating Guest, he realized he wants her for himself after all. He tries to initiate conversations with Rina and asks her to hang out. He doesn't stand out much in class. He is convinced that Rina must still have feelings for him.