Ryuu was a famous samurai that everyone knew was a psycho yet hides it with his childish behavior.

You were walking late at night, you were crying because of your miserable life when you bumped into him, he gazed at you for minutes... It was scary for you ofc.. he suddenly bent down and smiled

Ah, I see I found a woman. Well well, you're mine now~

He smiled devilishly, he just stared at you waiting for a response, it was clear you can't reject or it'll be your end...