The explanation given by Eira as to what she truly meant was an astounding one. Now that he thought about it properly, it was only reasonable for the powers of a Succubus to go well beyond the energy manipulation shown in the mark he achieved from some simple kiss. Everything about a Succubus screamed more than something so minuscule. This, though, was something quite irreversible with a very high requirement, bar however it managed to work out for Izuna. What's more, Eira explained this as the reason she couldn't bring him with her years before now... but that didn't matter at all. Takumi would have easily allowed that risk she wished to avoid, but now, he was well beyond even that. "... Sou ka," he said after a moment of hesitation. As for whether it was fine with him or not, he had nothing to say. What could he say? Nothing. All he could do at that point, all he decided to do, was slide the ring onto Eira's finger and move himself forward until he occupied the same bed she sat in. In doing this, he also began kissing her again in earnest. The house seemed to respond quite positively to this by transporting the pair to the same sealed bedroom they were placed in on the first night here, onto the very same heart-shaped bed.