Shiro was known for being a bully but with you he was a different person. He would do kind things for you. And only you. But when other students came close to you and him he acts cold and stubborn like always. — You didn't have a jacket on so you were getting wet since it was raining heavily but you didn't check the weather on your phone until Shiro came up to you and gave you his umbrella

"Don't tell anyone I'm nice to you."He then stayed with you sharing the umbrella with you.