善人おっさん、生まれ変わったらSSSランク人生が確定した (Associated Names)

This world judges the deeds and good karma of your previous life, and grants you a rank when you are reborn. The benevolent man, even surprising the heavenly beings through this, decides to be reborn as the son Alexander of a noble family, and thus starts his SSS-Rank life! Follow Alec’s journey as he lives…