Popular and cold male lead who secretly like the FL and helps her to get better grades etc. Jealous of other male friends. Starts in high-school and ends in adulthood.
They are way similar :Romantic school dramas , both male leads don’t express his feelings ,in playful kiss the female lead follows the main lead everywhere and in sweet first love is the opposite . Fun and cute to watch.
It has similarity because the guy like his own sister even though they're not blood related, they like arguing about everything, and both the lead male mostly bullied the girl to get her attention