Thanks for the recommendation. I love that your book looks actually used. Like an old friend that has value 
I put it on my “to consider” pile. Maybe I’ll get it as well. It was apparently published in 2021 so is relatively new, actually.
For novel recommendations, I recommend you take a look into the book club threads (intermediate/advanced). You can browse through the books the clubs have already read and see which of the books were liked and what people generally thought of them. Just be careful to not spoil yourself too much if you are sensitive to spoilers.
I’ve not read too much in Japanese yet but if you have favorite genres, or can specify what you like in books (e.g. strong characters, strong story, interesting premise, elegant writing style, poems, short stories, epics) somebody might be able to help you better.