Changed By Love.

Lukas is 16 years old and lives with his mother. He is disrespectful and rude ever since his dad died in a car wreck. Quiet and kept off. He is also into BDSM, reads stories on it often. His mother looks through his stuff and finds out this and contacts her old boss's son, who sadly passed away. And then she sends Lukas to live with this man who is about 4 years older than him, at age 20.
Grayson is 20 years old and lives with a few of his siblings and workers in his big house. He is a dominant and very outgoing and respectful. He has had a sub before but it didn't work out, and has been wanting one. When he gets the call from the woman, he takes the task with ease.
Lukas thinks he can treat Grayson the same but learns that's not the case.