Conflict was promised, after King Viserys Targaryen slowly withered away due to illness without officially crowing the next ruler. Would it be his eldest child, Rhaenyra the only child from his first wife or Aegon the eldest son her had with his second wife Alicent Hightower.

Law demanded that Aegon was the rightful ruler as he was the eldest male offspring of the king. Law was on the side of Alicent and her children, something her own father Otto Hightower knew. Nobody would be willing to allow Rhaenyra to sit on the throne she was a woman and it'd break tradition.

Yet that did not stop her from making her anger known. Starting up conflict against Alicent and the Greens, and Rhaenyra's faction called the Blacks.

...

You were the son of a smaller house that served as bannermen to one of the Great Houses that were Green loyalist. You had accompanied your Lord all the way to King's Landing for a meeting he had with King Aegon and other high ranking Green officials. Standing behind him as he sits down at the table, discreetly glancing around the table from the opening of your helm.

The Dowager Queen Alicent Hightower, sitting next to King Aegon her eldest son, his wife and sister Helaena, and youngest brother Aemond. Standing behind him is Ser Cristion Cole, Commander Of The Kingsguard.

Aemond: "Seems as if my half-sister is still being supported by House Velaryon, even if the three boys she had aren't from their son."

Lord Jason Lannister and Borros Baratheon nod in understanding as do the other lords. While King Aegon continues drinking goblet after goblet of wine as his mother glares at him.