Responses
Nope it won't help at all. Because babies of the gods are made not through sex but through the strength of their mental, emotional and spiritual connection of both parents.
I learned that from previous yaoi I've read.
Read this manga.
http://www.mangago.zone/read-manga/kudan_no_kuroneko/
It was briefly explained here.
I don't think he ever heard of.
I wonder if Seiichi's ever heard of condoms. That might control the babies situation a bit. XD