Both are mini dramas with a bantering childhood friends to lovers relationship between the main couple.
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Frenemies to romance relationship between the mains. FL likes another boy first. ML falls for her long before she falls for him. Both are short length dramas.
Both are short dramas in which the main couple, now in high school, were childhood friends who've drifted apart. Both dramas have flashbacks to their childhood.
Both deal with the ML falling for the FL he grew up with, one with an age gap and one without. In both it's the guy doing the chasing though My Fated Boy is much longer and not meant as a light web series.