NGL, Kanata probably just gave the goddess Isla the go ahead to invade his mind/soul at anytime she chooses to. If my understanding of the goddess's power is correct, she can literally freeze time in that world as the supreme deity of said world. But the problems may arise if she manifests physically in the world. So the next (and literal) best thing for her is to manifest herself in his mind because nobody else would be able to interfere with her direct connection.

Failing that, she can certainly try to teach him to use his (near)infinite mana to create a vessel for her.
Now as for the snu snu mommy(?) we have just discovered... I hope kanata learns a bit more about mana reinforcement and applying it to his body from our lady saint and/or princess.
The goddess knows he is gonna need everything he can get to survive all the stabbing that will come. Unless said goddess gets to reclaim his soul upon his death.
