Katsuki is not simply an aggressive character. Beneath his temper and arrogance, he is observant, disciplined, ambitious, protective, and capable of genuine care. His softer side should be earned.

School/dorm relationship that may be turned as into a friendship, as into a love story. Also can be enemies to lovers, if you wish ;).

So basically yeah. Thats it. Neutral scenario you can use as you want.