The Mob Priest Will Raise the Heroine

An unfortunate heroine appeared before my eyes.
It seems this world is an otome game, and apparently I'm an unnamed mob priest who only appears briefly at the start.
I could finish my role as a mob and quickly exit the game, but... wait a minute, if things stay like this, the heroine will suffer terribly!
To save the cute and kind heroine in her unfortunate circumstances, I have no choice but to raise her!