It has a happy ending. But i want more. Hope the side story will come out soon.

Same! The Arthur keeps teasing pics of the baby

It seems that Taeyoon is also son of the President.

I seen it in the last part of the Final chapter. The kid Taeyoon and Young director standing infront of president house. While Taeyoon Omega father asking that he want to met the president.

Can tell the physical resemblance and both are alpha.
I'm still waiting for the side story and the baby :)

The ending feels rushed so I hope the side stories are a bit long.