After the day torture, Alros decided to give Lunisa a breather, allowing her to take some rest after the intense torment he just gave her.
However, it was not done because of kindness.
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Being locked in a cell inside the Spirit Tree would normally not be much of an issue for Lunisa. And, fortunately for her, she could not be taken far from the Spirit Tree, even into the system space.
Doing so could potentially kill her, something Alros did not want, so the Archdemon was forced to keep her inside the chamber.
As the Spirit Tree exude mana that can be described as gentle, it lead to many advantages as Alros had assumed beforehand.
Namely, his women become stronger, and more beautiful the longer they stay near the vicinity of the Spirit Tree. Their skin become smoother, while their faces, for the ordinary that is, become beautiful.