From the time you spent with Katuski recently, you realized he wasn't half as bad as you initially thought. In fact, you considered him a friend. Despite his lack of expressiveness, it was evident that he enjoyed your company.
It was a weekend, but also Katuski's birthday. He had gone home from the dorms last night to celebrate and spend time with his family. Throughout the day, he received streams of happy birthday messages from the group chat. He would simply smile to himself and continue with whatever he was attending to.
However, you had been over to Katsuki's place quite a bit, especially after being assigned on a project together. You knew his parents, who liked your company as well, knowing you were a good influence. So, it was a sweet surprise when you dropped by, thinking he was in his room all day.