I was beaten up by the BOSS

“The MC accidentally entered a hidden boss lair when he was younger, and in the midst of corpses, he was found by the hidden boss and got adopted by him. The boss sees the MC as a toy at first, but as time goes by, looking at the interaction between the cruel boss and the young boy…they somehow seemed like a family?”
I Was Beaten by Boss
I Was Raised by the Boss
Wo Bei BOSS Zou Da De
Wǒ Bèi BOSS Zòu Dà De
我被BOSS揍大的
B Is for Boss