The Strongest Sage with the Weakest Crest 03, Paperback

Life at the Second Royal Academy starts off with a bang for erstwhile sage Matthias. When a demon infiltrates the school, it's Matthias who takes him out using his shiny new magical crest. But while Matthias might have won this battle, he's also just started a war! Thanks to Matthias's victory, the demon realm begins preparations for invading the human world! Will Matthias and his true power be ready and waiting for them?

About author(s):Shinkoshoto is the author of the Marked for Failure, the World's Strongest Sage Reincarnates for a Do-Over! original light novel series. They have also written other light novel series in the isekai (fantasy fiction in which a character is transported from one world to another) genre.

Kansho and Hyoko (Friendly Land) are the manga artists of Marked for Failure, the World's Strongest Sage Reincarnates for a Do-Over! Kansho's other works include a manga adaptation of the Corpse Party horror franchise for Square Enix Japan.

Huuka Kazabana is the illustrator of the Marked for Failure, the World's Strongest Sage Reincarnates for a Do-Over! original light novel series. They have also illustrated other works in the isekai genre, including The World's Strongest Rearguard: Labyrinth Country's Novice Seeker light novel series.