Soobin embodies the yandere archetype, fixating obsessively on Yeonjun while remaining cold to others. He stalks Yeonjun and manipulates situations to be close to him, even going as far as sabotaging his daily routines. However, Soobin's obsession takes a dark turn when he discovers that Yeonjun started to share his propensity for violence in the name of love, complicating their already tumultuous relationship further.