Rule 34 Dev - 1girl absurdres armor blue_hair fins hand_up head_fins highres k.o._century_beast_warriors kisaragi_miyuki ko_seiki_beast_sanjuushi light_blush long_hair looking_at_viewer mei_mer mermaid midriff monster_girl navel open_mouth purple_eyes shoulder_armor signature simple_background smile solo stomach white_background|24315427422