Rule 34 Dev - 1boy arm_guards bad_id bad_pixiv_id bare_arms bare_shoulders black_bodysuit black_gloves black_scarf bodysuit breath bulge closed_eyes clothed_masturbation covered_abs cum cum_in_clothes cum_string dripping egg_vibrator erection erection_under_clothes fingerless_gloves gloves hand_on_own_knee hatonasi highres katana knees_up male_focus male_masturbation mask masturbation mouth_mask muscular ninja ninja_gaiden ninja_mask pectorals ryu_hayabusa scarf sex_toy sheath sheathed shin_guards sitting solo sweat sword thigh_strap vibrator vibrator_in_thigh_strap vibrator_on_penis vibrator_over_clothes weapon|13205102391