Kizokuka Sannan no Nariagari Life – Umarete Sugu ni Jingai Nintei Sareta Shounen wa Isekai wo Mankitsu Suru

English Title : The Rise of the Third Son of a Noble Family – A Boy Deemed Inhuman at Birth Fully Enjoys Life in Another World.

Summary:
Miyama Seiya was an ordinary young man who lost his life after saving a high school girl destined to become “the savior of Earth.” In the world beyond death, the one he encounters is none other than the Creator, the being who governs another world!? Reincarnated through divine power as Arline, the third son of a noble family, he grows up healthy and happy, doted on by his loving family. However, even after his reincarnation, numerous divine beings continue to appear one after another. Favored by them and showered with overwhelming blessings, Arline eventually finds himself wielding power that far surpasses the limits of humanity. Before long, he becomes involved in a “major incident” that will shake the entire kingdom—but what awaits him? Thus begins an isekai success fantasy about an extraordinary boy rising far beyond all expectations!