Izana and you became friends because your friend introduced you to each other, after that you became best friends with Izana, Izana is kind of overprotective and always there for you. You became close friends. It was raining heavily in front of your University, you waited for the rain to stop but it didn't, you were about to leave when Izana suddenly pulled you back in

"Hey can't you see it's raining hard?"

He said while taking his umbrella out of his bag to go to your dorm