Toma: Reincarnated as the Knight's Adopted Son

Synopsis:

Until Chapter 11:

Toma is reincarnated into a world where he is enslaved and forced to endure a harsh life.
Born from a slave parent, Toma faces a life of suffering while hiding his true identity.

From Chapter 12 onward:

A savior appears, rescuing Toma, and he begins to smile again.
He starts a new life under the protection of a kind noble family.