Rule 34 Dev - 2boys bad_id bad_pixiv_id bat_wings black_legwear blush book book_stack bookshelf genderswap_(ftm) head_wings koakuma library long_sleeves looking_at_viewer looking_down multiple_boys necktie nicutoka red_carpet red_eyes red_hair red_necktie rule_63 smile solo_focus touhou wings yaoi|6903922056