Male Yandere is a yandere that is biologically male in gender. A yandere is a person romantically obsessed with someone to the point of abnormality. In essence, literally 'madly in love.' They often resort to manipulative or violent means to obtain the object of their affection.
Su Wan is a Realm Destroyer. She shuttles to different time-spaces using the identity of the “Cannon Fodder Ex-Girlfriend”, dedicated to plotting how to happily tear apart the male protagonist and the female protagonist —— There don’t exist protagonists who can’t be torn apart, only Ex-Girlfriends who don’t work hard enough~