Mangas that end like this?

I just love a love story that ends with marriage and kids, it's so adorable and makes my heart warm 💕.

So yeah, I don't want the story to take place in their highschool days though and I'd prefer an age gap manga (older fl or older ml I don't really care).

Source: Tsuki to Maple Syrup: Sensei to no Koi wa Mitsu no Aji