Accidental Champion Books in Order

When Earth joins a universe governed by the System, student Xavier Collins chooses to become a Champion without understanding the consequences. Transported into a tower of deadly trials, he must compete against experienced rivals and grow strong enough to protect his world.

Xavier's rise through the Tower of Champions brings him to a floor besieged by the Endless Horde. Defending Queen Alastea and her castle means confronting wave after wave of enemies, testing whether his extraordinary progress can withstand an apparently inexhaustible assault.

Returning from the Tower of Champions, Xavier finds Earth threatened by rival interplanetary powers. Clearing dungeons and mastering new abilities may not be enough to defend his world, forcing him to consider whether its protection requires venturing beyond it again.

With Earth's defenses secured and his power growing, Xavier returns to the Tower of Champions expecting further advancement. The System's increasingly unfair challenges overturn his confidence, forcing him to develop new strength simply to survive the trials ahead.

Unexpectedly reaching the Tower of Champions' hundredth floor, Xavier seizes the chance to gain power against formidable enemies. Returning to Earth as one of his sector's strongest fighters still leaves him uncertain whether he can overcome the dangers awaiting him.

Xavier travels to a distant Hell Moon to intensify his training, discovering secrets about its origins and the System behind it. Understanding those revelations could transform his abilities, but he must learn how to turn unfamiliar knowledge into usable power.

After a devastating battle leaves his magical cores shattered, Xavier can no longer cast spells or circulate energy. Training in seclusion with old companions, he attempts to rebuild his strength while investigating an unexpected consequence of the fight that injured him.

Xavier's claim to rule the Ventorin sector brings a powerful challenger and a mysterious mental construct offering help. As he investigates the presence inside his mind, a System-controlled arena becomes the testing ground for the authority he hopes to establish.

After overcoming an enormous threat to his sector, Xavier faces a more personal crisis when an ally is kidnapped. Beyond the territory that supplies his imperial power, he must confront an exceptionally powerful captor alone to bring his friend home.