Does anyone know?

I remember it's a shounen or seinen, and the mc (a man) Reincarnated into a baby, but later in life the parents find out and hate him for it (like for taking their baby or something like that)? That what I remember, well I didn't read it but I heard of it. I'm pretty sure it's either 'The Beginning After the End' or 'The World After We Fall' maybe possibly? Thank you!