50/50 on this one. The a/b/o part about the characters is green flag. The alpha is caring/doting on the omega. There is one glaring problem about their relationship though...
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.
Kamisama Nanka Shinjinai Bokura no Eden