Rule 34 Dev - anthro bed bodily_fluids chiropteran dayspring duo erection furniture genital_piercing genitals hi_res incest looking_at_viewer male male/male mammal nightswing nipple_piercing nipples nude open_mouth penis penis_piercing piercing punkcroc saliva saliva_string selfcest sibling spacebat square_crossover twincest twins yaoi|6885508448