Right, so if you haven’t heard the term "tsundere" before it’s a way to describe someone who is initially cold to you, but warms up over time. "Yandere" is a person that’s obsessed to the point of getting violent. Both of these are common anime or moe tropes in Japan.
In New Class of Heroes: Chrono Academy, these character traits are classes.
The tsundere class uses spears along with ice and recovery magic. (Haha, Acquire.) Yandere characters can equip swords plus darkness and support magic.
New Class of Heroes: Chrono Academy has a lot of jobs for players to choose from. Here’s what they announced so far:
Ninja / Kunoichi