I just created this account, my English is terrible so please forgive my grammar.
For those who want to follow WN, the Kakuyomu website has 528 episodes available, of which the manga only adapted 23.
I don't know how the permissions for sharing links work, so I don't want to risk the newly created account, but just search on Google for: "kakuyomu 冥王様が通るのですよ!" and go to the first result.
I hope that those who like reading can enjoy the work a little.