1girl black_hair clothes_writing collarbone cosplay enjaku_izuku flat_chest gundam gundam_suisei_no_majo helmet highres kantai_collection looking_at_viewer maru-yu_(kancolle) noto_mamiko one-piece_swimsuit prospera_mercury prospera_mercury_(cosplay) school_swimsuit short_hair solo swimsuit upper_body voice_actor_connection white_one-piece_swimsuit