Ayako and Takumi are finally dating! She has a boyfriend for the first time in her thirty-[REDACTED] years of life, and he's officially going out with the only woman he's ever had feelings for, so they're both pretty new at this. But wait...they're already moving in together?! Thanks to a not-so-coincidental internship that fell into Takumi's lap, he and Ayako end up sharing a condo in Tokyo when she goes there for a three-month business trip, and it's just the two of them. Despite both of them being in the first month of their first relationship, now they're already eating, bathing, and sleeping together under one roof... Can Ayako's heart take all the excitement?