Why was it specifically Mugen and not Miyuki who could say something like calling her a slut? Well, as far as Kaguya understood it, the whole thought boiled down to how it felt. When Mugen said it, it felt inviting and fun, there was no judgement or implied stigma. Strangely though when Miyuki said it, or rather thought it, it seemed to be a thing of implied shame and came with guilt or manipulation and that made it distasteful. As if to prove this point, Mugen seemed to comment on how her acceptance made him feel special. He hinted coyly at behavior befitting but under the stipulation that she do it as freely as she liked. This was better, markedly so than anything else she'd ever heard. "Hai, Mugen-sama!♥~" she'd easily fall into what this man wanted in such a way because of its lack of negative associations. Meanwhile, Miyuki felt like a disgusting presence now that she was thinking about it...
Ah, but right now that wasn't really important. She pushed it aside because she was having a man feed himself down her throat and that would require her attention. She came to realize that she felt quite comfortable with the idea of him sliding further down as she felt no discomfort from this, just the same the movements of her tongue and throat still happened just because. Mugen seemed to be quite enjoying himself, claiming he should remember to do this sort of thing for fun. Ah, but he wasn't ready to just leave her yet. He'd seem to withdraw only to push himself back in again and again. For a few moments, he'd find himself easily distracting the lass as well, as the increase of suction in her jaws had him going a bit further in every time pushed with her tongue still caressing him not that she needed anything. According to Mugen he shouldn't have waited so long to find an apprentice, with him removing himself and his still dribbling cock, Kaguya would be licking her lips and the tip of his tool as it made its exit. "Eh? I thought the first one just got here yesterday? Were all of you waiting around?" she wondered what kind of circumstances lead to this. But of course, there was something in the room which required a more immediate response.
That flaming ball of fire was still just sitting in the open space, looking quite oppressive. Of course, she now had some understanding of it in her head, but what would she do about this particular binding? Well... she'd need to talk to it, but given what she knew about it and its existence she had some more information to push through. 'Eldritch Horrors like Lovecraftian? Yeah, probably these words in my head sound like those names. Kei-chan ran a campaign with those as the boss monsters once... one of the flame ones,' she began sorting through her own memory box. Diving deep into a table top game she and her friends had played one weekend a few months prior to her arrival in this world. 'Fire based ones... Fthaggua, no. Not vampiric enough. Still, they'd be pretty cool I guess. Aphoom-Zhah? No, it's cold. What was the big one? When I was about to pass out, ah......' she gave her thoughts a pause as she heard the voice of a friend explain. A horror bigger than all others. Living flames burning in eternal burning served by all others. "C....C.... C..." she seemed to be coming to a certain name. It was right there at the tip of her tongue. "Cthugha!" she said this name and it would likely only be understood by Mugen himself and the creature which seemed to pause just a little. "Now is this friendship or subjugation?" she wondered having received the understanding of this creature responding to its name.