mayo riyo, asahina mikuru, asahina mitsuru, koizumi itsuki, koizumi itsuki (female), kyon, kyon no imouto, kyonko, kyonko's brother, nagato yuki, nagato yuuki, suzumiya haruhi, suzumiya haruhiko, tsuruya, tsuruya-senpai, suzumiya haruhi no yuuutsu, suzumiya haruhiko no yuuutsu, bad id, bad pixiv id, 00s, 2girls, 5boys, ass, ball, beachball, bent over, brown eyes, brown hair, genderswap, genderswap (ftm), genderswap (mtf), multiple boys, multiple girls, one-piece swimsuit, ponytail, school swimsuit, sparkle, swimsuit