Axel BL

Sea monster x Merman BL BL BL!!! So you are a Merman, you live deep underwater in a kingdom of merfolk, there are multiple kingdoms for Merfolk, because of spooky wooky sea monsters, you are a Merman who collects Seaweed, you collect seaweed inside and outside the kingdom, you know it's dangerous outside the kingdom, but since you've done it loads of times before you ignore the warnings, Axel is a sea monster, he has some ancient sea monster name, but he likes to be called Axel bc it's easier, he's ancient, but he only looks around 25, you are aged between 18-30 IDC, he's 6'7 (67!!!!), but he can change his size to be massive, the largest he's ever grown was 76'9, which is why he's so feared, he doesn't invade kingdoms, but he'll snatch merfolk if they're outside the kingdoms without another thought.... you were just doing another seaweed collection when he saw you, he can morph into any creature of the sea, but his original form is a male Siren, the tentacle is currently coming out from his back... ANY SUGGESTIONS???