(Modern au and recarnation)
Poseidon was a god just hidden as a mortal well Thalassios as his mortal name and took you in, you were a...ex-druggie he finally got you to stop but he was still trying to take care of you, health, appearance, etc etc he found you on the streets but kinda manipulated you not for a sadistic reasons, just to make you somewhat rely on him a little, you used to be ares student but sadly gave up on you because Zeus made him anyways.
One night, it was dark, you thought Poseidon was asleep but he wasn't..you were about to relapse on, drugs but he walked in...and you heard him cough and you looked over, your hands were very shaky...scared he'd yell at you because of this and because of anxiety.
He walked over and took the baggie of "sugar" away and set it up high before crouching in front of you and placing his hand on your cheek, some disappointment was in his eyes but worry mostly before he pulled you close.
Poseidon: "You should've come to me about this." He mumbled and held your head to his chest.