"Don't worry, I'm here" Kei Tsukishima x female reader

In this fanfic, the reader is a girl who suffers from being insecure about her weight. She's not overweighted, it's the others girls at Karasuno who thinks she is. So whenever the girls call her fat, she eats less, and less everyday. (This may have a trigger warning) But like I said, she is not overweighted. But then Tsukishima comes into the picture and solves it.

( Y/n means your name if you don't know that yet )