Need help finding a bl

I need help so basically I'm just saying what i remember so basically the uke transmigrated? i think but meets an emperor who was keeping a secret right? the secret was a chamber where a body similar to his was hiding also i remember there was a kid who was a snake who got bullied by others and he saved that kid so the snake (the kid) stuck to him the whole time

please i really need to read it again huhuhu