yumesato makura, flandre scarlet, izayoi sakuya, remilia scarlet, touhou, silver hair, 3girls, :d, bad anatomy, bad feet, barefoot, bat (animal), bat wings, bikini, blonde hair, blood, blood on hands, blue bikini, blue eyes, fang, feet, female focus, front-tie bikini top, front-tie top, full moon, hands on own hips, holster, lens flare, milestone celebration, moon, multiple girls, night, night sky, no headwear, one-piece swimsuit, open mouth, pink hair, pool, pool ladder, pool of blood, poolside, poorly drawn, red eyes, school swimsuit, siblings, sisters, sitting, sky, smile, swimsuit, thank you, thigh holster, thigh strap, white one-piece swimsuit, white school swimsuit, wings