"Hatsukoi Jikan" is a hentai series that explores the intimate and complex relationships of its characters, focusing initially on Ena, a girl rumored to be sexually experienced but who is actually pure and inexperienced, and her introverted boyfriend. The story unfolds with youthful innocence and passionate encounters, including a subplot involving a tsundere maid named Anri who shares a complicated, love-filled dynamic with her master.