Series by 吉河美希

Nagi Umino, a diligent high school student, discovers he was switched at birth and is set to meet his biological family. On the way, he crosses paths with Erika Amano, a popular internet celebrity desperate to avoid an arranged marriage, who ropes him into pretending to be her boyfriend. To their shock, Nagi and Erika learn they are the babies swapped at birth—and their parents, unwilling to part with the children they raised, decide to arrange their marriage. Forced into an engagement and living together, Nagi, who has feelings for his classmate Hiro, and Erika, determined to forge her own path, navigate a whirlwind of emotions, rivalries, and unexpected bonds.

Ryu Yamada, a delinquent high school student known for troublemaking, struggles with poor grades and a reputation for fighting. After a chance encounter, he accidentally swaps bodies with Urara Shiraishi, a top student and aloof beauty, revealing her hidden supernatural ability. They discover their school harbors seven girls with unique powers, each activated by a kiss, and Yamada becomes entangled in their mysteries. Alongside Shiraishi and their friend Miyamura, he navigates the chaotic effects of these abilities, starting with body-swapping mishaps. Their efforts to uncover the secrets behind these powers lead to comedic and unexpected alliances.

Daichi Shinagawa, a notorious delinquent at Monshiro High School, wants nothing to do with school activities and prefers a trouble-free life. Hana Adachi, the bespectacled class representative, relentlessly pesters him to participate, revealing her surprising strength and past as a former delinquent. Despite her clumsy and airheaded nature, Hana’s determination to reform Daichi drags him into school events, sparking comedic chaos. Their unlikely partnership begins to shift Daichi’s outlook as they navigate classroom duties and confront other delinquents. Joined by classmates like the shy Seiya Chiba, they face humorous challenges that test their bonds and school spirit.