To battle a malicious monster, five women are gathered in front of Commander Charles against their will. The five women are selected because they each have a family name that represents a color. The five women are filled with doubts about what they are able to do collectively, but they go up against the monster using their lethal technique "Women Tornado". The five women can only use the "Women Tornado" when they are all gathered together.

High school student Kyosuke Shikijo is the most talented member of the school's martial arts of the fist club. His late father was detective and Kyosuke share his father's strong sense of justice. Kyosuke also has a secret. Kyosuke likes to wear female underwear and transforms himself into the alter ego "Hentai Kamen," wearing female underwear and gaining superhuman powers. This unusual interest also comes from his parents, with his father a masochist and his mother a sadist. By chance, Kyosuke gets the underwear of female high school student Aiko Himeno. With her underwear, he gains various pervert techniques and attempts to protect Aiko from a dirty and heinous teacher.

Riko, who will begin university in Tokyo in spring, journeys there from Hiroshima in February with her father to find a place for her to live. On their travels, they meet various colorful characters. The father remembers his late wife, and raising his daughter alone. Their fun time together is tinged with the knowledge that it is about to end. Rakugo performer Kyotaro Yanagiya appears in his first leading film role, and rising star Anna Ishii plays the sensitive Riko. The eccentric supporting cast includes Romi Park, Akihiro Kakuta, Keiko Yanagawa, Kei Ishibashi, LaSalle Ishii, and Momiji Yamamura.

A couple of months have passed since the serial murder case. A new dead body is found in the same area. Detective Manabu Kagaya tries to find the truth. He goes to see serial killer Yoshiharu Urano in prison.

Nozomi Kuroda is in the 2nd grade of high school. One day, she finds a letter in a classroom desk. The letter has only the word "like" written on it. The person who wrote the letter is Jun Setoyama. He happens to be the most popular boy at the high school. Nozomi Kuroda feels embarrassed, but she eventually leaves a reply in a shoe closet at school. This is how their secret exchange diary begins. Nozomi Kuroda soon learns that the intended recipient for the first letter was her best friend. Nevertheless, Nozomi Kuroda is attracted to Jun Setoyama, who expresses his thoughts and feelings unlike her. She's unable to tell him the truth that the person exchanging messages is her and not her best friend.