Shi ni Modori, Subete wo Sukuu Tame ni Saikyou He to Itaru Or After Being Reborn

Eric lost everything. Family, childhood friend, best friend, and loved one. Eric loses everything and despairs that there is no point in living in this world and commits suicide. However, he woke up when he should have died, and when he grasped the situation, he became a baby! ? He thought that it was a reincarnation...