Rule 34 Dev - ansatsu_kyoushitsu blue_eyes blue_hair blush cosplay fuji_(f_ukkami) grin hat highres holding koro-sensei koro-sensei_(cosplay) long_hair long_sleeves looking_at_viewer male_focus necktie one_eye_closed shiota_nagisa shirt short_twintails smile tentacles trap twintails white_shirt|24739400205