Rule 34 Dev - 1futa 4boys asleep bondage bound_wrists cave chains doujinshi female femboy futanari futanari_penetrated futasub goblin goblin_male gojin magic malax male male_on_futa medium_breasts monochrome original original_character reincarnated_into_another_world_as_sex_slaves_to_goblins_and_now_we_fight_for_them transformation trap|9147216368