Forge of light: Reformation of life in another world

Ken is a 31 years old convenience store worker he is force to be a shut in because of some bullies and drop out all because of his heroic/edgy personality after helping out a fellow classmate from getting bullied it works but he got targeted instead.

After that his friends abandoned him afraid of getting caught up aswell

Ken realizing he had no one to rely on never leaves the house again leeching off of his parents but one day he got kicked out by his family

A year later after work ends he saw a highschool girl getting harassed by a group of men are they hitting on her? or robbing her? after making up his mind he decided to step in and tries to save her but the other guy pulls out a knife and rushes towards him

And he gets stabbed after trying to fight ledding to him bleeding out and die