rifyu, furudo erika, ushiromiya ange, ushiromiya battler, umineko no naku koro ni, translation request, 00s, 1boy, 2girls, 4koma, blue eyes, blue hair, brother and sister, comic, flat chest, hair bobbles, hair ornament, mask, mind control, mouth mask, multiple girls, one-piece swimsuit, red hair, school swimsuit, short twintails, siblings, sleeping, square 4koma, sunglasses, surgical mask, sweat, swimsuit, twintails