And to be clear, that is not what I am asking, look at 14-sai-no-koi, I really like how comfortable those 2 are and how they tend to communicate with each other, not all the time, they are both quite young, they got understandable flaws but they work them out together.
GOAT mentioned, to be fair, most RomComs would be finished in no time with some of their characters as the protagonist (since they are functional human beings), just think about how long this one would last with Shouta as the main character.