It was to be expected to a degree that she hadn't heard of any iteration of the Nisshoku, but he would be careful, at least to a small degree, what he shared. For now, she was going to get a short history lesson that she would need to know for the future.
"Cult of the White Flame."
Holding out his hand, he watched as a green flame was produced in his own hand, and for a second, maybe two, it lightened in color, becoming brighter as it did, but deepened back to more of a green. There was a sight somewhere between frustrated and disappointed as if he expected something different to happen, before he closed his palm into a fist and the fire went out. Looking to Yui once more, his right eye seemed to twitch, showing a thought trapped behind his lips, but he regained his composure before he continued.
"An organization created after the first ever White Flame, by one Nakajima Shiro. It's goal was to gain more control over this very village, though the green flame at the time, in their limitless stupidity, stomped it out as Shiro, and those that followed passed."
He kept watch, trying to read her face, her eyes, if she looked to try and respond even, but in short order he spoke again before she would have a chance.
"Today, it's a name you should not speak in polite company."
His lip curled, as if his own words burned him from the inside, swallowing back whatever annoyance he was clearly feeling in that moment. Even he couldn't hide the fact that having to keep it and Seika herself such a secret was necessary, but once more, he regained his composure.
"This...cult, today, it is lead by another Nakajima, one White Flame at the head of this group above all others. I've no doubt you could guess the name, so quietly, speak it to me."
He waited for as long as it took her to say what she had to say, watching carefully, but not moving any further from her during this conversation. If anything, as she spoke, he would lean closer, and as he spoke his voice was more quiet.
"We follow the name of the woman you've been openly speaking of, but you must understand to speak her name is to bring attention to yourself, and luckily that attention came from me today. In this village, I am the head of this clan, not for myself, not for my gains, but for her. In this organization I'm what is referred to as Yogensha, or a prophet for her, for Seika. My official title is Yoru Yogensha, or the Prophet of Night."
His words hung in the air as he stopped there, more to say, but letting her absorb what he had shared. It was heavy no doubt, and he was not only giving her an explanation but a choice she didn't quite know of yet. From this moment forward he would be giving her the choice to take this information, assimilate it, and come closer to their side, or there was a real chance she may not walk out of this room with the ability to ever repeat this information for one reason or another. The choice, for now at least, wouldn't be so obvious as to extend his hand and invite her in, but how she reacted and how she responded would be answer enough for now.
"My role is firstly to keep this clan in check, keep my eyes open, which is why I'm also at the right hand of the Lady of Yuki. Who is closer to her than I am? No one in truth. I am also the senior member of the Diplomatic Squad, I'm sure you can guess where I'm going with this. At the top of the group within the village that deals with information from other villages, in a position of trust with the leader of our village, and at the head of our clan within the village."
Holding his up hand, he held up two fingers.
"Secondly, I recruit for the Nisshoku and I train others in spy craft within the group, so they can return to our or other villages to gather information, live out their lives as usual, and they themselves quietly spread our influence for Seika. The goals of the Nisshoku, well that's something I simply won't discuss, not now at least. Feel free, for now, to speak your mind."
Now he fell silent, completely, leaning back and against the edge of his desk. By now the room was uncomfortable, and the air was thinning, but he didn't seem to care; It was intentional, after all.