You can check the sales volume in Amazon JP

My dude, stop worrying about what other people think about what you read or your interests lay and just enjoy them. At the end of the day you'll impress far more people with your enthusiastic enjoyment rather than worrying about what anyone thinks. Most people's opinions don't matter. Consider the manga My Dress Up Darling, people will come along who appreciate your jam, just look for them.

I was wondering too

There was a story I have had in my head for nearly my whole life. Ever since I was like 3 I had a story idea that was basically an Isekai. A guy who on his sleep is in a fantasy world with knights, magic, and dragons; while he sleeps in the fantasy world he is in the "real world." I put real world I quotes because the real world was basically a sci-fi world like our own but the main difference was everyone had a chip Implant that served as a TV, computer, and telephone in one where you can have an imaginary screen pop up in front of you and play Mario or metroid or something. Well basically the real world was like Accel world and the fantasy world was like any other fantasy world.

Edit: I have added way more over the years.