With his dying breath, Haruyoshi, the strongest exorcist, casts the Spell of Reincarnation...and awakens in another world as Seika Lamprogue?! Determined not to repeat the mistakes of his past life, Seika sets out to find happiness this time around!Haruyoshi Kuga's power as the strongest exorcist is all for naught when he is betrayed by his closest ally. With his dying breath, he casts the secret Spell of Reincarnationwhen he next opens his eyes, he finds himself in a different world altogether, reincarnated as Seika Lamprogue, the son of a family of magic scholars!He quickly learns that the magic in this new world is quite unlike the sorcery he learned in his past life and that he can't use it. Fortunately for him, with his mastery of curses and the hordes of youkai at his disposal, he doesn't need to.Haruyoshi (now Seika) is determined not to repeat his past mistakes in his second life by smartly laying low and avoiding flaunting his power. Yet accomplishing his goals and without drawing attention to himself proves to be easier said than donewill his powers be enough to live a happy life?!

Alvin is a young adventurer with an atrocious negative skill. In spite of his overwhelming strength, he's considered a nuisance by those around him and kicked out of his party.In the throes of despair, he hears a rumor about a dungeon where one can obtain an item that erases skills and recklessly decides to solo the boss. That is, until he meets Cocoru, a cleric who has also long suffered from her own negative skill. However, when Alvin learns the effect of her skill, he can't help but think… "Couldn't our skills work well together?"The negatives cancel each other out and become a positive! As their skills multiply together, nothing can stand in their way! This is the ultimate "mutual support" story for these unfortunate adventurers!