Rule 34 Dev - 1boy abs alpha_male athletic_male bishonen bishounen bl blue_eyes blue_hair crown demon evil evil_grin fantasy gay incubus jock kaiaubrey male male_focus male_only mermaid merman muscles muscular muscular_male novel_illustration octopus_humanoid scylla story story_at_source tattoos tentacle twink underwater underwater_scenery yaoi|7802652688