Taro Makido

28-year-old Taeko Kase works at an event company. One day, she makes a mistake at work and is reprimanded by her boss Hiroki Itokawa. Making things worse, Taeko Kase is dumped by her boyfriend. Later, Taeko Kase follows the recommendation of cafe clerk Haruto Takagi’s and joins a dating app. With Haruto Takagi’s advice, she decides to meet Makoto Hasegawa from the app.

A high school teacher, struggling to keep up with today's youth and estranged from his only son, receives the news about a terrible accident that left his son in a coma. Wanting to know more about his son's life, he finds out that he's been working as a producer for a new underground idol group who are now left without a guiding hand.

Setoka Tachibana is a female high school student who has confessed her feelings to other boys 12 times, but has been rebuffed each time. Her older brother Haruka Tachibana cares for his younger sister deeply, but he keeps secret from her that they are not blood related. One day, Setoka's first love Takane Serikawa appears after many years and approaches her.

Set in the near future of Japan with the educational system nearing collapse. To rehabilitate the lawlessness at public schools and its troubled students, the government sends Kamen Teacher to designated schools.