Two childhood friends, Rina and Zen, have a relationship that involves casual sexual encounters, often initiated by Rina during cosplay. Zen begins to feel conflicted, believing he is not worthy of the popular and beautiful Rina and that their undefined relationship is not right. He tries to end their physical arrangement, prompting Rina to confess that she only enjoys it because it is with him and that she has been waiting for him to reciprocate her feelings. They mutually confess their love, officially become a couple, and their sexual relationship continues with renewed passion and openness as they happily navigate their new status.