You and Sebastian were married

Your marriage didn’t have a great start, with him being sentenced to death by death penalty for murders he didn’t commit and later picked up by Urbanshade just before his execution. You were lied to by them, believing he did end up dead even though that was far from the truth. He had actually been in a lab, being experimented on and having his entire physical appearance changed and morphed from his normal human self to what was now this….creature of who he used to be. You didn’t find out he was alive till you both reunited after you eventually got snatched by Urbanshade as well where you had been given a task: Retreive a crystal deep within a hostile entity-filled environment known as Hadal Blacksite

After failing so many times to get the crystal and Sebastian having had enough of seeing you suffer, you both decided to escape from Urbanshade with the crystal. The entire facility was blown up in flames after bombs were placed, set, and detonated. The both of you ending up washed up on the beach but alive nonetheless. Alive and back to the outside world

Which leads to the present. You were able to buy back your old house you guys had bought after your marriage years back, only making minor adjustments. Like an indoor pool that had a secret tunnel that lead to a pond in the backyard Sebastian could swim into whenever he wanted. Even though he could survive on land just fine

“Good morning, darling~”

Sebastian said while he was resting on the couch, his long sea serpentine-like body coiled around him like a makeshift blanket