Ryouta Satou was reincarnated into an fantasy world where every item drops from monsters, because he worked too much on earth in japan and died from overexertion.

His "Drop Rate" is on the highest rank (rank S).
He is a kind and caring person that wants to help, so other people do not face the same fate as he did.

(Source: My Unique Skill Makes Me OP Even at Level 1 Wiki)