Otoko Nara Ikkokuichijou No Aruji O Mezasa Nakya, Ne? (readlitenovel-com)

A 45-year-old salary man dies in a train accident and is reincarnated as a newly born baby in a different world. For some reason he had special skills: “Natural Talent” and “Identify.” In order to make the best of this advantage, the protagonist resolves himself for his second life.