"Encountering the last boss from the beginning is an impossible development in a game."

A high school student, Himuro, whose goal is to live quietly, is attacked by a mysterious phenomenon with his classmate Kasuzu Nanami, and is a monster alone. It will be transferred to the labyrinth of another world.
Awakened to the ability to summon the cards of the game "Card Master Fantasy" that he was playing in the crisis of desperation, he defeated monsters one after another. With the elf knight Tianar who helped along the way, he will eventually win the "Last Boss" genie Zardu in this world- "

Don't lie immediately. You can't defeat that genie.
" But really ......... "

Nobody believed that they had defeated the genie-- !?
The different world Musou fantasy presented by the card master who killed the genie, opens here!