Don't run away screaming: this is not shota. They do fall in love when the kid is still much too young, but they wait for him to grow up. You get time skips etc. This is an adorable story.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Owaranai Fukou Ni Tsuite No Hanashi