A yandere is a term originating from Japanese anime and manga subculture to describe a fictional character archetype.
A yandere refers to a person, usually a female character, who appears loving and affectionate on the surface but has a dark and obsessive side.
They can become violent, possessive, and even homicidal when their love interest or object of affection shows interest in someone else.
Yandere characters are known for their extreme and often psychotic behavior, adding drama and suspense to the storylines in which they appear. The term has also been adopted in broader internet culture to describe real-life individuals who exhibit similar obsessive tendencies.