1girl, chibi, clothes_writing, cosplay, dancing, diving_mask, diving_mask_on_head, doma_umaru, doma_umaru_(cosplay), goggles, goggles_on_head, grey_eyes, grey_hair, hamster_costume, hamster_hood, himouto!_umaru-chan, kantai_collection, kujira_naoto, maru-yu_(kancolle), one-piece_swimsuit, sankakuhead_(style), school_swimsuit, short_hair, solo, standing, swimsuit, white_one-piece_swimsuit