Rika moves in with Naoya and the others, and insists that sleeping in the same room with him in a non-sexual fashion should be completely permissible. Naoya agrees, but only if all the girls get to take turns sleeping in his room in a non-sexual fashion.
Anything that isn't sexual is okay.
.لا بأس بأي شيء ما دام ليس شهوانيًا
Qualsiasi cosa non erotica... va bene.
Desde que não seja sexual, tá tudo liberado.