Rule 34 Dev - 2boys arms_behind_head arms_up black_hair bondage cowgirl_position erection gay gintama gnook implied_anal implied_sex katsura_kotarou kiseru long_hair_male male male_only nude on_back on_bed penis pipe rope rope_bondage rope_harness sitting_on_person smoking smoking_pipe takasugi_shinsuke tied_penis yaoi|7558737712