High school student Hayakawa Shuichiro has given up his beloved music and closed his heart due to a past incident. Sometimes, to fill that void, he sleeps with anyone. But one day, when he is still not satisfied and is overcome with a suffocating pain, Hayakawa heads to the roof of the school building. In this deserted place where the sky and the sea blend beautifully together, he is able to naturally hum the music he thought he had abandoned. On the roof, he meets his classmate Konno Ryohei. Hayakawa is strongly attracted to Konno, who is unsociable but faces his beloved camera head-on. However, at the same time, he compares himself to Konno, who is completely unwavering in his favorite things and dreams, and he begins to feel helpless jealousy and inferiority. Hayakawa, overwhelmed by his complicated emotions, blurts out his uncontrollable feelings. Since that day, their relationship has changed from friendship to something else.

Hiroshi Suzuki works as a top hair stylist and is confessed to by Natsuki Washizawa, whom he meets again for the first time in several years. Hiroshi's memories of Natsuki, who shamelessly pestered him in high school, have become a dark memory for him, so he decides to date him, saying, I'll make him fall in love with me and then throw him away!

Tôjô Suzume, who has been single for over 10 years and spends his days just going back and forth between his office and home, realizes that there are only three months left until his 40th birthday. Suzume makes a list of 10 Things I Want to Do Before I Turn 40 due to the sudden sense of impatience he feels at the turning point of his life. Takoyaki party, Change your taste in clothes, Find a lover... Then, the list is accidentally seen by Tanaka Keiji, a handsome junior subordinate. However, at Keiji's suggestion, the two decide to fulfill the list together. Their mundane days change into fun days spent together. And they become special people that transcend the relationship of boss and subordinate and their age difference. This is a fascinating story about the slowly closing distance between the two and the love story of an adult who falls in love for the first time in a long time.

During a campus play, a 'relationship training' game turns real as lifelong friends cross boundaries and slip into a secret romance.

A flustered teacher scrambles to hide his fanboy side when his idol films at school-but being cast as his co-mentor makes secrets hard to keep.

An exemplary student and a troublemaker delinquent are drawn together after the former discovers the latter's secret, leading to an intimate relationship between the two.

On the night of his greatest success, famous actor Armin dies after being betrayed by his lover. However, death is not the end. Going back in time and meeting mysterious fan TD, the path to superstardom begins again.

In the near future, a virus has changed the sexual structure of humans, giving birth to a unique ABO system.