The Aristocrat's Otherworldly Adventure: Ep.1 "I Reincarnated " (English Dub)

A Japanese teenager is killed saving two girls and finds himself reincarnated in another world as Cain von Silford, 3 year old son of a noble family with his memories intact. He meets his father Garm, mother Sarah, maid Silvia and older sister Reine. He also meets Garm’s first wife, Maria and much older half-brothers Djinn and Alec.. Due to his sudden increase in intelligence he is allowed to study and begins using magic in secret. Reine tutors him on many subjects. Two years later Cain is ready for baptism and learns there are 7 Gods in the Marineford Faith. During his baptism all 7 Gods inform him since he died performing a good deed he will receive blessings from all of them. Cain realises with their blessings he has instantly become the strongest, smartest, most skilled human alive. His family are thrilled but worried governments may see him as a threat so Cain keeps his powers hidden. At his baptism party Cain decides to become an adventurer so he can travel the world helping people. In secret the Gods reveal they need Cain to become the strongest living creature by his 16th birthday to prevent a great evil.