I Wanted to be Hurt by Love
Ongoing | shiruka bakaudon | 2000 released
A very good manga depicting the downfall of a "true" Yandere. We mostly see Yanderes as very cute,childish a little obsessive lovers who only want good at the end of the day and this manga is everything but that. It depicts the true depravity of what a Yandere actually is, and is capable of. For anyone who is into Yandere's i recommend reading this.
Boku Wa Mari No Naka