horiguchi yukiko, hiiragi kagami, hiiragi tsukasa, iwasaki minami, izumi konata, kobayakawa yutaka, patricia martin, takara miyuki, tamura hiyori, comiket 73, lucky star, absurdres, highres, 00s, 6+girls, ball, baseball, baseball (object), clothes writing, glasses, holding, holding ball, mole, mole under eye, multiple girls, name tag, one-piece swimsuit, school swimsuit, siblings, sisters, softball, sportswear, swimsuit, twins, volleyball, volleyball (object)