expression, ichidan verb
be indebted; be under an obligation
Used when someone has received a favor or kindness and feels a sense of gratitude or obligation. Often implies a lasting debt of gratitude.
彼には大変お世話になり、恩を受けています。
He has helped me greatly, and I am indebted to him.
恩を受けた人には
I want to repay the kindness someday to those I am indebted to.