if you look through their source code there are ad tags.
view-source:https://[redacted].com/titansgrave--the-ashes-of-valkana/sea...
unless you have a competitor you really hates you for some personal vendetta, it's exceptionally rare to see this level of effort for the purpose of negative SEO in 2021.
like I said just looks like a spammer going for low hanging fruit, throwing everything at the wall and seeing what sticks