1 image to explain how a Tsundere turns into a Yandere.
I-it can't be helped then, huh!? Fine, okay senpai! Let's go out together.Please don't misunderstand, garbage-insect-senpai! I! ...Take senpai! ...As my toy! I'll just temporarily control you, got it!?It absolutely won't be "going out" or such, the way men and women do it!*snicker* *snicker* I'll do lots of cruel things to you! I might break you! Haah... I might break you, senpai! Ahah! You can't run away anymore! Senpai, please brace yourself, okay!?