Real Teaching: The Supporting Character Ishigami Also Wants to Become a Popular Protagonist

Who says that supporting characters can't be the protagonists? Some people only need a little help to become the protagonists. As for me, I was born to be the protagonist chosen by the author, so it's understandable that I make a few mistakes occasionally. That day, Ishigami Yu said so righteously. The girls: So, Ishigami-kun, what do you want to say? Ishigami Yu: Um, can you not slap me in the face?