Why Must I Fight When I'm the Protagonist of a Sports Anime?

Kageyama Rin, male, sixteen years old.

His cousin is the genius setter Kageyama Tobio, his childhood friend is Kise Ryota, a member of the Generation of Miracles, and he himself won three consecutive national championships with Rikkai University Affiliated Junior High. He always thought he was in a sports anime about youthful ambition.

Although he can see yokai, Kageyama Rin also had spirit eyes in his previous life, so apart from making a kind-hearted friend, nothing much changed.

But after leaving the U-17, Kageyama Rin felt that something about the world seemed off.

A boy with a sword hanging over his head appeared in Tokyo, five skyscrapers rose up in Yokohama, and he could even watch the Vongola succession ceremony on TV. One day, while out buying athletic tape, he encountered a cursed spirit and realized that he really had gone from a sports anime to a high-risk world where survival might be difficult. At last, Kageyama Rin couldn't take it anymore. He pulled out his tennis racket and sent a tennis ball flying.

Grade 2 cursed spirit: dead.

Then Kageyama Rin realized that in this incredible, all-powerful world of anime, tennis might possibly, probably, be a high-risk weapon.

Kageyama Rin, male, sixteen years old.

Special ability: Murderous Tennis. (Really, he just has a tennis racket and ball with him wherever he goes.)

Danger rating: Five stars.

Kageyama Rin: To be honest, there are dozens of tennis players like me in the world ^_^

*The worlds fuse because of Saiki K, not because of a second transmigration.

*No plot progression, strange timeline, silly everyday life.

*There may be OOC moments, but I'm not sure how much.

*Tennis is the biggest bug of all.

The CP will happen as I write.

Theme: Keep working out!