Shonen Jump manga.

"First published in Japan in 2015 by Shueisha, Inc., Tokyo."--Colophon

Destroyer -- Inside the Treasure Hall -- Memories of you -- One instant -- Destruction and salvation -- Assembly at the royal capital -- The Distinguished Service Ceremony -- Capital riot -- March of the dead

"Asta and his teammates were ready for trouble when they were sent into a magical dungeon full of traps, but going up against the Diamond Kingdom may be too much for them to handle. Even Yuno couldn;t stand up to Mars and his mineral magic - does Asta have a chance ...?!"--Back of book

Reads from back to front and from right to left in the traditional Japanese format

Rated T for teens

Translated from the Japanese