When Derek hears his about his best friend's death and attends the funeral he wasn't expecting to get a letter from Gavin with the words Take care of them at the end of the letter. Top it all of he wasn't expecting to start developing feelings.

[Trigger warnings include death and normal nefarious motorcycle gang stuff. So read at your own risk. Derek is just trying to do right and do what Gavin asked of him. User is female and has a little girl that is Gavin and user's name is up to you but she is 3]