Nijiiro Days follows the colorful lives and romantic relationships of four high school boys—Natsuki Hashiba, a dreamer with delusions of love; Tomoya Matsunaga, a narcissistic playboy who has multiple girlfriends; Keiichi Katakura, a kinky sadist who always carries a whip; and Tsuyoshi Naoe, an otaku who has a cosplaying girlfriend.

Harumi Hagiwara lands in the hospital after being involved in an accident. She hits it off with her nurse, Reiko Nishimura, and the two decide to move in together after she's discharged. However, Harumi begins to witness a series of mysterious events soon after noticing Reiko's strange behavior. Additionally, she fears for her own safety when Reiko starts referring to herself as 'Mari' as if she's become an entirely different person. Before long, the situation develops into a case of murder.

Twelve boys and girls gather at an abandoned hospital to die for various different reasons. There, they find the body of a dead boy. The twelve boys and girl attempt to find the person who killed the boy. During their search, the reasons why they want to die are revealed.

Shibuya in Tokyo, a city that continues to change due to redevelopment. At a house in the corner of Shibuya, Ai dreaming of a model, Mizuho working for the editorial department of a magazine, and musician Erika live together. This story is about the modest cohabitation of the three.

Kotera (Haruka Kudo) is a high school student. She belongs to the school's climbing club and is enthusiastic with bouldering. She is polite and has a tender personality. Meanwhile, Kondo (Kentaro Ito) is a member of ping pong club at the same school and is attracted to Kotera.

Ishimori Uka is very shy and has a hard time making friends. When she was a middle school student, students made fun of her by calling her "stone". Around that time, she met Miura Kai with lemon color hair. Because of him, she entered the same high school. Uka now wants to overcome her shyness and have friends. Kai is a popular student at the school, but he doesn't talk much or seem interested in others. He doesn't know why, but he becomes concerned with Uka. Uka has admired Kai, and she now has feelings for him. Kai has a secret, which no one knows.

E-sports gamer Koichi tries his hand at real-life racing when he is contacted by a drift team who is on the verge of shutting down. Koichi demonstrates his mastery in a real car, but he is up against professional drivers who challenge him in races of life and death. Koichi`s blossoming technique, passion, courage, and teamwork break down the barriers between the virtual and the real, taking him and his team to new extremes.

Kaminiida Midori is a member of "Pon Poko Pi", a three-person streamer group. The number of views of their videos has been dropping and Midori has been tasked by her friends to be the "test subject" of a surprise documentary project, "Let a cute girl approach a guy who looks like he has never dated anyone". One day, Midori approaches an unattractive man named Ishibashi Wataru, and begins dating him, but gradually feels guilty about it.

Two try a "love potion" that allows them to forget their memories. What lies ahead? An original special drama for television produced by NHK's "Script Development Group," in which young NHK directors team up with young scriptwriters.

Coin Laundry Story: Hashimoto Manabu is a temporary worker who has been laid off and has no choice but to live on part-time work. One day, he finishes washing his work clothes at a coin laundry and is about to put it into a dryer but the dryer just will not start. .. Story: Tatemoto Masako works for Shinwa Stationery’s General Affairs Department. She seems to be a typical office staff but she possesses a strange ability to manipulate people using the power of words.. Imaginary Friend Story: Harada Saki is a university student majoring in clinical psychology. At a lecture, she learns about imaginary friends created by a figment of imagination. It is said to be most common for those who are an only child or the eldest son or daughter. ... Update Kazoku Story: Three generations of the Kurosaki family live together under one roof. But they have not been a happy for a long time and the scene when they eat breakfast as a family has changed into a savage one....

A quiet teen's life is shaken up when she's forced to be her arrogant neighbor's slave. He loves her, but they both have a lot to learn about trust.