Ending Spoiler. Not 100% Sure Tho, Its Just 2 Raw Pages.

So, I found 2 raw pages that seem to be of the last chapter/ending of the story.
Neon (alpha kid) and Kyouchi (omega) eventually ended up having a baby it looked like.

Link: https://www.tumgir.com/tag/Suterare%20Omega%20wa%20Nido%20Naku