Mito Ryou

A salaryman who dragged himself along the bottom of a collapsing Japanese society until he managed to get himself run over by a truck. Upon dying, he is informed that he wasn't supposed to die yet, and he gets offered a chance to go back to before he made a certain choice that had the potential to alter his future.

His personality is cautious to the point of cowardice, and he retains all his experiences as an adult in his new life. However, since he wasn't interested in the world around him in life beyond avoiding trouble, he doesn't remember anything that might be useful to him.