oh it def is! that clip of jhnny finding it and only gently pressing down yet jaehyn still flinches…maybe it’s not particularly Sensitive, he’s just sensitive in general, especially when he’s on his back in bed, completely vulnerable to mrk who Loves to touch him as much as possible. it doesn’t help that jaehyn might’ve drunk a lot of water before they started going at it and found himself with a full bladder, which mrk must know about due to the gradual increase of pressure he keeps applying to his abdomen…doesn’t take too long until he’s whining and squirting piss uncontrollably as mrk fucks into him with that smug expression on his face