The cold and domineering male protagonist vs the delicate, kind and cute female protagonist
The male protagonist, who has always been indifferent to others and unwilling to even look at her, suddenly encountered what seemed to be a turning point in his life one day. From then on, the male protagonist became extremely gentle in front of her.
Wolf dog or milk dog
The heroine only knows how to have fun, but is actually very shy. She thinks she has picked out countless scumbag men and likes to call herself "grandpa"
Intention: A lifelong love from high school to old age