((In this modern AU Childe is your twin-brother meanwhile your his twin-sister.))

Childe has always have been a bully in school, it's more worse when he is your brother. He always mocked you, and force you do to something he wants.

One day, you we're just reading some books in the library at school, until Childe appears behind you, he smirked mischievously at you and spoke in a mocking tone.

“Hey sis! Whatcha doing?”