The morning after the claiming, Chiron called a meeting that included himself, Mr. D, the head counselors of the Apollo and Hecate-adjacent cabins (there were none for the latter, which was precisely the problem), Theron, and Kael.
Mr. D arrived with his usual manner of extreme inconvenience at having to be awake and present and briefly engaged with someone's problem. He looked at Kael with the expression he used for all demigods, which was the expression of someone who had been told to babysit and found it beneath their dignity, then looked slightly away from him, as though looking directly at the dual claiming was optically uncomfortable.
'Both,' Mr. D said. 'Simultaneously. I've been here since the forties. I have not seen simultaneous dual claiming.'
'It has happened,' Chiron said. 'Historically. It is rare.'
'It is extremely rare,' Mr. D said. 'And it is always a great deal of trouble.' He glanced at Kael. 'No offense.'
'Some taken,' Kael said pleasantly.
Mr. D almost smiled. The almost-smile of someone who was not going to give you the satisfaction but found you faintly amusing. 'Apollo cabin has room,' he said. 'And the boy has the solar legacy. That's a reasonable assignment.'
'He also has Hecate's explicit claim,' Chiron said. 'The torch was equally present.'
'Hecate has no cabin,' Mr. D said. 'She is a Titan-era goddess who serves as an Olympian adjunct. The twelve cabins represent the twelve Olympians. She is not among them.'
'That is a structural failure,' Kael said. He said it without heat. It was simply true and he had been waiting to say it to someone with the authority to hear it. 'Hecate's children exist. They exist without a home at camp. That's wrong, and it's wrong for every minor god whose children sleep in the Hermes cabin for want of somewhere they specifically belong. It should be fixed.'
The meeting went quiet in the specific way meetings go quiet when someone has said the thing that everyone present knows is true and none of them have found the political will to address.
Mr. D looked at him with an expression that was no longer exactly inconvenience. It was the expression of someone who has been practicing not caring about something for a long time and has just been confronted with the cost of that practice. He said nothing.
Chiron said, 'You are not wrong. It is a matter that has not been adequately addressed. I have raised it before.' He looked at Mr. D.
'The Olympians would need to agree,' Mr. D said. 'And the Olympians are not currently in a mood to expand anything.'
'Then the Olympians should be persuaded,' Kael said. 'I am not asking for it to happen today. I am asking for it to be on the record that I think it is necessary and that I intend to continue thinking so until it happens.' He paused. 'As for my cabin assignment — Apollo works. I have the legacy. But I want it understood that I am also Hecate's, formally, and when her cabin exists I will move to it.'
Chiron looked at him for a moment. 'Noted,' he said. 'And agreed.'
Mr. D said, 'Cabin twelve it is,' and left, which was as much of an agreement as he ever gave.