I skim/read the raws and....
Spoilersss
Again spoilers okay!!
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The Kotofuji depicted here is not a god anymore. I'm not really sure about the flow of events (my japanese is not that good), but when Kotofuji tried to bend Tsuyugasu's fate, his shrine was burned (which equals Kotofuji dying). Due to loss of Kotofuji, Tsuyugasu made a scroll in remembrance of Kotofuji. This scroll now is the Kotofuji Mayuki likes and just a shadow of the god.
I hope I interpreted it well (๑•ㅂ•)و✧
I remember browsing this title in kindle and there's the claim in the front page that its a story you'll want to read 2x. I like this author but I wasn't able to buy it.
https://ibb.co/ZLxG4G9
(Bottom notes says: Certainly you'll want to read twice; an amazing mysterious love)
Now I know (⌒▽⌒)
P.s. my translation is not good
The first one's story is great (and with drama CD too!) I'm willing to translate as long as someone will do the cleaning and typesetting hhah (=・ω・=)