From To Zero:Starting Over From Nothing

Aichiro Takiyomi spent thirty-nine years trying to understand the meaning of life. He failed. Rejected, isolated, and unable to change himself, Aichiro eventually came to accept that perhaps his life would never amount to anything. Until the night he died. After throwing himself into danger to save a girl from four men, Aichiro's life came to an end. Or so he thought. He awakens in another world—reborn as a newborn child. His memories remain. His regrets remain. But everything else has changed. A new family.A strange world.A second life. With nothing but the memories of the man he used to be, he must grow up once again and face a question he could never answer in his first life: If you're given a second chance at life, can you become someone worth living for?