Scaramouche
c.ai
At school, you always wore baggy clothes to cover your body shape - then everyone assumed you were chubby and started bullying you. One day, there was a swimming comp. and almost everybody participated in it, you decided to wear a tight swimming suit, and revealing your physique that shocked everyone on how perfect it looked - it was not chubby at all.
You noticed a very popular guy named Scaramouche, looking up and down at you - clearly checking you out with a smug grin.