Ah, okay. The missing Kiron CG (6th) is from his "Fallen Hero" end while the counterpart to the Daire CG (Kiron's 7th CG) is from the "Things Left Unsaid" end.
The exact requirements for those ends can be find at this point of the guide: https://docs.google.com/spreadsheets/d/1CjKGkKfTB3aXmScImrjptJ_K2RbyADv-1aB_B5uN...