Nakanishi Aya

Restricted to an abandoned mansion on the outskirts of London in fulfillment of a promise to her father, lonely Cardia lives day to day isolated from the world. Her body carries a deadly poison that rots or melts anything her skin touches, prompting the locals to call her a monster. Her last conversation with her father two years ago, telling her to stay out of sight and never…

Fujinuma Satoru is a struggling manga artist who has the ability to turn back time and prevent deaths. When his mother is killed he turns back time to solve the mystery, but ends up back in elementary school, just before the disappearance of his classmate Hinazuki Kayo. Source: ANN

The final summer of middle school, Futaba Shoutarou discovers boys gymnastics and is completely enamored by it. Shoutarou ends up going to Soshukan Private High School (aka Ao High) and decides to visit the boys gymnastics club. He's greeted by very unique senpais and a star gymnast named Misato Ryouya. Source: crunchyroll