Tada Shiawase na Isekai Kazoku Seikatsu, Tensei Shite Kondokoso Shiawase ni Kurashimasu

Araki Susumu is a hardworking father of two who was rejected and distanced by his family. On his 50th birthday, he suddenly loses consciousness and is transported into the body of a baby in another world, now living with the new name "Tidus". Determined to live a new life without regrets, he vows to live a fulfilling, happy life with himself and his new family.