We can think of these characters as the reverse of the Tsunder. Yanderu, ie, the patient is a combination of the words and the words deredere. Adorable characters appearing at first and foremost, they may become psychopathic when they see someone who harms their loved ones. So those who are normally cute and lovable are loved and loved by their loved ones to die and there is nothing they will not do for them. But many of them are full of pain (torture, rape, etc.). In other words, they were not psychopathic. But when a psychopathy enters the job, they can easily kill and torture men for their loved ones. In fact, this situation may even result in knitting the person he loves. That’s why they are rare characters.