A capable office lady and a laid-back manga artist's cohabitation life takes an unexpected turn…!? Nanami realizes her true feelings for Kaede. However, she doesn't intend to act on them immediately and continues to lead a relaxed cohabitation life. One day, she receives an email from her junior, who goes by the name Koga Manhiro. Although Nanami doesn't recall anyone by that name, Manhiro confesses, "I've liked you for ten years..." Meanwhile, the distance between Kaede and Koyuki suddenly shrinks. With Nanami staying overnight at the office for work, she sees this as a good opportunity to forget about Kaede and leans towards Manhiro. However, Nanami ultimately makes a significant decision.