An Ice Lamp: Gira Chronicles

She is a 14-year-old smart girl who was raised as a boy. Thinking about whether to leave the monastery empty or become a slave to the nobility, the transcendent Maharita offers to plant her eggs in her body and grant her wishes in return for showing the fully swollen moonlight each time. After accepting Maharita's suggestion, she had a man's voice for 10 years. There are even a lot of ladies and knights who have to fight, and even a magician holding her ankle