Yankee Wa Isekai De Seirei Ni Aisaremasu

Manai Zero is in high school for the second year. Not so long ago he was transferred to a new school where he was one of the strongest students. His position Zero did not like at all. Once on his way home he saw a little boy running after the ball on the way. At that time, a truck was going straight to the child. Manai did not get confused and quickly pushed the boy away, but he got under the wheels.
After a while he woke up in a library that is not like the others. There is a spectacle that calls itself God. He offers Manai reincarnation. The hero of history agrees without hesitation, after which he goes to a new world full of adventures.