Didn't I Say To Make My Abilities Average In The Next Life?! Light Novel Vol. 10

Mavis's solo side-quest is unexpectedly extended when she rescues a maiden from pursuers--only to learn that she's a princess on the run, with a lot of very nasty individuals after her! Meanwhile, there's trouble in the air as an old foe returns to face the Crimson Vow. Three old foes, in fact, all of them elder dragons! What does this blast from the past mean for the girls?