Miki Yoshikawa

16-year-old super-studier Nagi Umino, second-year student at the Megurogawa Academy high school, was switched at birth. On his way to a dinner to meet his birth parents, he accidentally meets the brash, outspoken, Erika Amano, who is determined to make Nagi her fake boyfriend as she never wants to actually marry. But once Nagi makes it to dinner, he finds his parents have decided to resolve the hospital switch by conveniently having him marry the daughter his birth parents raised...who turns out to be none other than Erika herself!

One day, high-school boy Yamada bumps into the beautiful girl Shiraishi on the stairs (literally), and their lips touch as they fall. When they regain their wits, they realize that they have swapped bodies. As time progresses, the two realize that this is not the only mysterious happening in the school.

Urara Shiraishi is a model student with excellent grades. Ryu Yamada is a trouble student. One day, Urara tumbles down the stairs with Ryu. After the accident, their bodies become switched. When they tumbled down the stairs, they happened to kiss. They guess that they may have changed bodies because of the kiss. They kiss again and they get their own bodies back. Through kissing they can change bodies freely. They also learn that there are 7 witches with special abilities and that the 7 witches can use their special abilities by kissing, so Urara and Ryu set out to find the 7 witches.

Shinagawa Daichi used to be a good student who has now become a delinquent, while class president Adachi Hana was a delinquent who is now trying to move on. Her secret is discovered by Shinagawa, but she involves herself trying to correct his ways.

A crossover anime short between Yoshikawa's two series, Yamada-kun and the Seven Witches & Flunk Punk Rumble.