Rule 34 Dev - 1girl :d bad_id blush clam collarbone female_focus gem green_hair hair_ornament highres jewelry k.ei long_hair mermaid monster_girl muromi-san namiuchigiwa_no_muromi-san necklace open_mouth pearl_(gemstone) red_eyes seashell shell smile solo twintails two_side_up underwater very_long_hair|4199113620