This story is about a loner student in high school named Yuuji Nishida. He is a loner because his classmates consider him a freak since he always plays dating sim games everywhere and everywhen. One time, after school ended, he goes home like he always does while playing his favorite dating sim game "Dungeons & Love". At the intersection, a little girl starts running onto a busy street and a big truck is also heading her way at a high speed. Yuuji who sees the truck coming, starts running to save the little girl's life. He successfully saves the girl's life but at the cost of his life. After he lost consciousness, he got reborn as Stefan Weiß, the supporting character of his favorite game. However, after some time he realizes that his strength is not the same as the Stefan he knows. So, what will Yuuji do with his newfound power in his favorite game?

(English is not my mother language, so bear with me, please.)
(Cover art is not mine)