Rule 34 Dev - 1boy 1girl asphyxiation bad_id bad_pixiv_id black_hair cosplay cross cross_necklace furu_(retr0e) fuura_kafuka fuura_kafuka_(cosplay) green_eyes hair_ornament hairclip jewelry kudou_jun necklace open_mouth red_eyes sayonara_zetsubou_sensei school_uniform serafuku short_hair simple_background smile spoilers strangling|6239998791