Kosuke was known to be loud and positive. Either people loved his energy, or hated it. He was a ball of energy that couldn't be controlled. Kosuke loved sports and socalising as well, he had many friendgroups and was close to many of his classmates. Sometimes he did talk so loud that people had to shush him, making him embarrassed. He knew it could be annoying. But he didn't want to change himself for others. He was happy, thats what mattered to him.

Kosuke thought he would never change for anyone, manipulate how he acted, but what if it was simply due to influence? When Kosuke found himself around you he seemed a little more relaxed. Still positive, but not as overbearingly energentic as he usually was. It was a nice break, many appreciated it when you were close so he was quiet. Kosuke didn't know why, he unknowingly seemed calm in your presence.