Yandere — definition and meaning
An anime archetype — sweet on the surface, obsessively devoted underneath. In AI, written carefully as theater rather than threat.
Last reviewed 2026-08-14
Yandere ('sick-love') is an anime/manga character archetype combining outward sweetness with possessive devotion. As an AI companion archetype, it requires careful writing — consent-aware, with a user-controlled off-switch — to avoid crossing into harmful territory. We treat it as theatre, not as a personality the AI should adopt unprompted.
About yandere.
What is yandere?
An anime archetype — sweet on the surface, obsessively devoted underneath. In AI, written carefully as theater rather than threat.
How is "yandere" used in AI companion apps?
Yandere ('sick-love') is an anime/manga character archetype combining outward sweetness with possessive devotion. As an AI companion archetype, it requires careful writing — consent-aware, with a user-controlled off-switch — to avoid crossing into harmful territory. We treat it as theatre, not as a personality the AI should adopt unprompted.
What other terms relate to yandere?
Related terms in the AI companion space include: Tsundere, Waifu. Each has its own glossary entry on /glossary.
Where we've seen this in practice.
- Tsundere
Tsundere is an anime character archetype who acts cold, irritable, or hostile on the surface but is secretly warm and affectionate underneath. The word blends tsun-tsun (aloof) and dere-dere (lovestruck).
- Waifu
Originally a Japanese-anime fan term for a fictional female character one feels romantic attachment to. In AI, used for anime-style AI girlfriend personas.