PLS HELP i dont know the name

So this was recommended by yt it was a korean web series from what i remembered there was an overweight girl and she has a guy friend and also has kind friends by her side. I mostly forgot the 1st ep is that the friends throw a birthday party in the classroom for the girl and a lot of her classmates were watching the friends gave her the cake and she blows the candles and gobble the cake. While a lot were happy on how she gobbled the cake they were some haters also. What I love about this drama is that the girl didn't lose weight and accepted of what she is and also the guy loved how the girl since the beginning. I want to find this drama and watch it again PLS HELPP ME