Wow such a mystery a powerul mage helping a family whose powerful mage has not appeared yet.
Why are you writing like a 5 year old and making literally everyone an idiot.
First, Ryuu's identity is hidden, but the narrator simply says her name several times. Second, man, not only the entrance, but even the lines at the end were cliché, it was the typical phrase when Mc arrives late to save the day.