This is a 4 star manga all around. MC died mysteriously with a typical Isekai in a magical regular world. The twist is him having absolutely zero combat capability? His main ability is the choice to travel to any world in existance, including....Japan? So just imagine in his Isekai new body, he can go back to Japan even though he died there decades ago?? Story wise it's decent, the deeper logic is questionable since you got other Japanese "possessors" or "Isekai" people. So just read with knowing it's more for entertainment and business focus. The critique may center on how easy things happen around him