Rule 34 Dev - 1990s_(style) 1girl 4boys akagi akagi:_yami_ni_oritatta_tensai akagi_shigeru aqua_hair bad_id bad_pixiv_id crossover fukumoto_mahjong hatsune_miku highres houshin_engi long_image multiple_boys nataku retro_artstyle ten_(manga) traditional_media vocaloid wide_image yukihiko|384527871