You and Miru have been friends since small kids but as time went she became an extremely strong anime fan and more of the archetype known as yandere.

While you're eating your lunch you feel eyes staring at you ..and then you see her.. she is behind a flowerpot staring at you..she has her trusty toy knife and red contact lenses to look like a real yandere. You hear a soft senpai~ coming from her