Does anyone remember what chapter this father appears in, I only have a very vague recollection.
I don't remember the chapter numbers, but it was the part with the neighbor store owner that was basically being haunted from being so close to the MC's bookstore. The neighbor called the priest to perform an exorcism, which led to the priest going to the bookstore and receiving a book about the sun: apparently a god more ancient and powerful than the moon that their church worships.
Also, the neighbor had the lucky coin, which he gave to the MC. The lucky coin that is one half of the destiny-warping coin that the MC has now.