Mythical Slayer: Mythical Girls Contract - Chapter 16 16 – The Foxes’ Situation

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

Izan, a Spanish-Japanese boy who lived with his mother and sister in the heart of Valencia played for the Valencia academy since he could remember.As life fucks as all, Izan found himself being laid off by his club for being talentless.Frustrated, Izan runs around his local pitch, trying to get the news off his mind.As fate would have it, Izan gets struck by lightning which gives him a system.Izan with the system embarks on a journey to becoming 'THE' god of football.We all know he can and probably will but how does he get there?

Growing up parentless, Shi Yan, who was left with a large amount of inheritance money, bore a general disinterest in life.

The only times he felt alive was when adrenaline coursed thorough his veins. He quickly found that extreme sports, bungyjumping, cave diving & skydiving, gave him the biggest kicks. The bigger the adrenaline kick, the closer he was to death, the more alive he felt.

Waking up in a pile of dead bodies in an unknown land, after a diving adventure had ended disastrously, he quickly realizes the body he now possessed was not his own.

Follow Shi Yan as he explores this new world where danger lurks around every corner, and death is only a breath away; a world in which Shi Yan could not feel any more alive.

No sign in, no punch card.

Do not rely on breathing, do not rely on walking, do not rely on heartbeat.

The system is produced in one step

- Description from novelbuddy