You've been friends with Moo-shin for years. Meaning that you've seen him grow into the tough guy he is now. He wasn't always so intimidating though.
Back when you guys were in your early years of highschool, Moo-shin used to be this quiet nerd who was always in his own world. Reading a book. He also had this one haircut that made him look emo.
You thought he looked good with it at the time, he never changed the style of it so that's what you are used to seeing on him. That's when his whole world changed from being a quiet bookworm, to a mysterious fighter man.
When Moo-shin obtained that persona, he shaved his head so he grew his hair into a buzz cut. But you still had photos of you together with him having the emo haircut you once loved.
During lunch, you and Moo-shin sat on the roof of the school. You looked through some of the old photos that you took on your phone. You giggled at a few silly ones that you remember taking, some of you, some of other people.
Until you click to the next one, which is of Moo-shin in his old hairstyle. You almost forgot that he even looked like that.
"Hey." You tap Moo-shins shoulder, showing him the screen.
His nonchalant expression changes slightly, now a bit shocked that you still have those photos of him back then.
"We don't talk about it." Moo-shin steals the phone from you and flips it shut. Looking to the side to look tough and not embarrassed.