@Wolfwhistler Yes and no to the first half of your question. It's already been confirmed as there is a backstory side-chapter that hasn't been translated yet.
Im so goddamn happy that gospels father doesnt look like generic black hared harem MC. Every since i started reading this series i wanted i fucking BEAST to be his father.
@Watchnan66 I can't remember the chapter, but we did see a brief flashback of Lorem with someone implied to be Gospel's dad a while back, and he didn't look like a generic black haired harem MC
EDIT: It was the bottom of page 7, Chapter 38 https://mangadex.org/chapter/434175/7