Story follows high school student Saki Miyanaga and her classmates as they become absorbed in the game of mahjong. They target an upcoming national competition.

Kazuto Okada of "Sundome" and "Not in the textbook!" Is the second live-action movie series of the sexy love comedy manga "It's not an angel!" Iroha Yanagi, a gravure idol, will be double-starred by Aya Yoshizaki of "Last Idol". Two more demons, Amy and Labia, come to Okada, who spends his days being swayed by the apprentice demon Seere. Okada's life is extremely chaotic, but in the meantime, a uniform theft incident occurred at school. Okada is suspicious. Okada tries to catch the true criminal by time slipping in the past with the help of Seere to clear the stigma.

Kazuto Okada, a popular manga artist known for "Sundome" and "Not in the textbook!", Has created a sexy love comedy "It's not an angel!" Live film adaptation. One day, an apprentice devil, Seere, descends under the bullied virgin high school student, Okada. Seere tries to fulfill the wishes of human beings in order to become a full-fledged demon, but in order to fulfill his wishes, it is necessary to take one important thing. Seere tries to play a role for Okada, who has a crush on her classmate Aimi. Iroha Yanagi, a gravure idol, is the heroine of the main character's class, and Aya Yoshizaki, the "last idol".