I'm Just a Mob Priest, but Since I Realized This World is an Otome Game, I'll Train the Heroine

An unfortunate heroine appeared before me. It seems that this world is an otome game, and I am just an unnamed mob priest who appears briefly in the early stages. I could fulfill my role as a mob and quickly exit the game, but... wait a minute, if things go on like this, the heroine is going to face terrible hardships. To save this cute and kind yet unfortunate heroine, I have no choice but to train her myself!