Project Ranking and Battles

Ichiro wakes up and saw himself in a in a large room of a large mansion.

Ichiro, a student of a high school who was somehow teleported to the mansion.

The story is about Rankers who have high physical and mental strength and have been teleported to make them more powerful and to save Atlas.

There are 5 Toppers of Rankers who have the highest scores and it is a mystery that who first and second rankers are.