Isn't the appearance condition for the hidden character a cheat?

I'm a girl named Nishida Kaede who loves otome games. On the day of the entrance ceremony, I realized that this world was actually from an otome game—though I have no idea where I learned about it. Moreover, I discovered that my admired neighbor is a hidden character. And so I decided to determine whether the heroine is truly worthy of my neighbor... I believe there may be some typos and omissions. I would be grateful if you could view this warmly!