Light Novel Volume 14

Wizards of Career Counseling is the upcoming fourteenth novel of the High School DxD series. It is the second novel of the Legend of Oppai Dragon and his Lively Companions arc.

Summary
(From Kadokawa Shoten):

Many Magicians came to offer a pact with Issei and the others after saving the Underworld. During that time, Gasper receives an order from the vampire faction to return home. It seems like it is to calm down the ruckus occurring at his home, but.......