Sorry for the late reply(*_*) i learn demon's Kimono(clothes) is so artistic from your reaction video!! recently, japanese traditional crafts is decreasing... so, thanks for uploading this video! by the way, demon boy said "Noone can bother our family!". so, it is too sad to kill them. but demon also kills lot of people without thinking about people's happiness life... except Nezuko, Tamayo, Yushiro. So, being happy, we mustn't oppress the other people. i think this episode may tell that message.