I Was Summoned by the Devil to Defeat the Brave Man

One day, Croki, a young man living on Earth, was summoned to another world. The person who summoned him was the local demon king. The large land currently ruled by the demon king has been invaded by heroes. A former classmate turned out to be a brave man? My childhood sweetheart is currently clinging to each other! The evil-looking Mordus sought help from Croki and promised to cast a goddess for him. Croki transformed into a dark knight and vowed to stop the brave. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.