Katie had several excellent ideas about how to handle the diplomatic side of things, including sending a small delegation back with him. Her second brother—or at least, Catherine du Pont's brother—didn't have much to do at the family estate because he was the younger son and their father was still alive.
He had studied politics at a prestigious academy for noblemen and would know how to behave. He was also unofficially seeing a woman his parents didn't approve of who was quite well-versed in politics and functioned as one of King Franz's aides.
Marcy Grandin was a friend of theirs as well and would likely be willing to go. All that left was an actual member of the Kanta clan to be sure their interests were properly represented.
Blaise was impressed by the ingenuity of the plan. Shibatsu was already in an alliance with Annalaias so sending two of their citizens along who had ties to both the royal family and the Kanta should make this easier.
