Zennin Ossan, Umarekawattara SSS-Rank Jinsei ga Kakutei shita

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 gods 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 his life as a SSS Rank!!

(Source: Shueisha, translated)