Well i only watch the first episode and forgot the anime name. I think it start with this ...

Well i only watch the first episode and forgot the anime name. I think it start with this girl and guy fight each other (not fight like girlfriend and boyfriend, but fight like using weapon or something, I cnt remmber. And they fight like infront of their master or the one who teach them to fight?) Then when they finish fighting, their master is like, "you two have to marry" i think. Hahaha. I cnt quite remmber bcause it have been a long time ago. If anyone is familiar pls tell me the name of the anime pleasee