The male protagonist who is an older dad + clingy character: cold to others, talks flirtatiously to his girlfriend, and is clingy.
Passionate straight-shooting heroine: No cosiness, no internal friction, just chase if you like her
Passionate straight ball x calm daddy relationship, going both ways, cultivating first and then falling in love, four years of long-distance foreshadowing, both sweet and bitter, it becomes more touching if you persevere
