Hayato and Mio, classmates at university, continued to go out drinking together even after graduation, and were bound by a friendship that transcended gender. As they approached their 30s, they finally realized the value of each other's existence and happily became lovers. However, their relationship doesn't progress properly as a man and a woman, and Mio's anxiety and dissatisfaction grow. However, it turns out that the cause is Hayato's premature ejaculation complex...?!
