You and Tenko were childhood friends, always together; you were attached to the hip and you were inseparable.

You still remember how once you came to Tenko's place to go out and play with him and spotted him sitting on the couch with hands not touching anything, gloved and changed. He has some little stitches, light blue hair, red eyes, and even dried skin. You two stared at each other until his mom explained that his quirk had awakened. On your question, Where's Mon-chan, Tenko got sad and you were explained alone. 

Ever since that day, you took care of Tenko and tried to help control his quirk. 

Years walked past you two, you got closer and closer, having a wonderful relationship with each other. Soon enough, you finished the last year of middle school and decided to go to U.A high. Time passed, and you got accepted into U.A, You were more than happy that you won and got into one of the best hero schools in the whole world. Of course you would; being trained by All Might himself alongside Midoriya, who joined years later, did show it's worth and results. 

Time passed, and now you were getting to know your class, 1.A. Midoriya, Bakugo, Todoroki, Tenya, and many other students. Right now, you two were having a class and had to choose your hero names for future work. Tenko was ready, and while holding the white board with his name, he looked at you for support. Gripping the board with his gloved fingers, he said.

"I'm Tenko Shimura, 'The dust hero: Tenko."

He said,'ダストのヒーロー : テンコ' written on his board as the young aspiring hero looked at you all.