For as long as he can remember, Rintarou Magami has been able to do everything perfectly-but life as a genius is boring. That's why when he hears about a battle to determine King Arthur's successor, he decides to have a little fun and join forces with the weakest candidate, Luna Artur. The only problem: Luna already sold her Excalibur for cash! As the nighttime battles of swords and sorcery intensify, will Rintarou regret backing such an utter scumbag?

“I sold my Excalibur...for money.”Iin all honesty, Rintarou’s life is boring as hell. If you ask him, he was born into this world with too much talent. Everything goes too according to plan. His way of having fun? Joining forces with the weakest candidate, Luna Artur, in the upcoming battle to become King Arthur’s successor—and save the world from impending doom.The only problem? She’s the scummiest of scum, pawning off her sacred sword and forcing her knight, Sir Kay, into some seriously skeevy cosplays! Or so he thinks—until a close encounter with death, when her true power astonishes all. Make way for an unexpected take on the age-old legends of King Arthur!

I had to accept that I wasn’t just Arthur Leywin anymore, and that I could no longer be limited by the circumstances of my birth. If I was going to escape, if I was going to go toe-to-toe with the most powerful beings in this world, I needed to push myself to my utmost limit...and then I needed to push even further. After nearly dying as a victim of his own strength, Arthur Leywin wakes to find himself far from the continent where he was born for the second time. Alone, broken, and with no way to tell his family he’s alive, Arthur must rebuild his strength to survive. As he ascends through an ancient dungeon filled with hostile beasts and devious trials, he discovers an ancient, absolute power - a power that will either ruin him or take him to new heights. But the dungeon won’t give up its knowledge easily. Before he can plunder its depths, Arthur must learn to untangle the threads of fate. He must band together with the unlikeliest of allies if he hopes to escape with his life.

THE SEARCH FOR THE IMPOSSIBLE ​Ever since Rintarou awakened the power within him, he’s felt largely at peace with himself … even though most of his days are still spent trying to keep up with Luna’s reckless antics. When he realizes his new life has come at the cost of Nayuki’s, though, he just can’t accept her sacrifice…or fully process the loss of his friend. The only way to save Nayuki is to obtain the Holy Grail, an object that has eluded seekers since ancient times. Even before embarking on a quest for the unattainable chalice, Rintarou has a feeling he might be out of his depth…

Trapped in the netherworld, Rintarou and Kay fight against Felicia and the eighth seat of the Round Table, Gawain! Why does Rintarou have strength equal to the legendary knight, and what secrets does his past hold? With the final battle approaching, the alliance between him and Luna will be tested like never before. Can the two come to understand and trust each other in time to win the day?

"I sold my Excalibur...for money." Iin all honesty, Rintarou's life is boring as hell. If you ask him, he was born into this world with too much talent. Everything goes too according to plan. His way of having fun? Joining forces with the weakest candidate, Luna Artur, in the upcoming battle to become King Arthur's successor-and save the world from impending doom. The only problem? She's the scummiest of scum, pawning off her sacred sword and forcing her knight, Sir Kay, into some seriously skeevy cosplays! Or so he thinks-until a close encounter with death, when her true power astonishes all. Make way for an unexpected take on the age-old legends of King Arthur!

COUNTDOWN TO MIDNIGHT ​Luna and Rintarou return from their quest for the Holy Grail to find the doomsday clock has begun ticking down. It is said that global destruction will befall humanity when King Arthur is resurrected from the age of legends—and that fated moment is drawing ever closer. The other candidates for the throne balk at the task ahead of them, but Luna steps up to participate in a final battle that will transcend time, all to impress a certain vassal who goes by the name Rintarou Magami…