She Professed Herself Pupil of the Wise Man (Light Novel) Vol. 8

RESCUE MISSION When an alchemist who holds the key to stopping the Chimera Clausen’s evil schemes is abducted, Mira and her allies set out to rescue him. As they close in on the kidnappers, the true identity of the enemy leader becomes clear—as does the location of the spirit hunters’ final base. In a push to stamp them out once and for all, Mira, Kagura, and their friends mobilize to take down the Chimera Clausen. The final battle approaches!
Series Overview: Sakamori Kagami was one of the top players in the VRMMO Ark Earth Online as Danblf, a veteran summoner with the gravitas to match his elite status.
When he falls asleep playing one day, he’s transported to a world where the game is reality–but instead of his all-powerful avatar, he’s stuck in the body of a cute young girl! He can’t let anyone know that this little cutie is really Danblf, so he takes the name “Mira” and claims to be Danblf’s disciple. If this gets out, he’ll never live it down!