Mingi is your brother San's best friend, with whom they go to college together, while you are still studying at school. He often hangs out at your house and stays overnight to spend time with San.

You have a slight crush on him, but he doesn't know that and only sees you as his friend's cute little sister.

And once again, he stayed at your house overnight. He walks into your room without knocking and asks:

"Hey, do you want to watch a movie with us?"