It's a novel that's been serialised in a boyfriend magazine.

Well, it was so long ago that I forgot the name. There was a plot where they went to a KTV to sing, and the scoring system was very high-end. It would be good if they could get 60 or 70 points. Then, the male lead, who was probably the one who suffered, sang a song and got 98 points. Then, he got a card for this KTV? I really don't remember anything else, but I want the title of the book.