“He Who Fights with Monsters 10” is a book by Shirtaloon¹². The story is set in a world where a laid-back Australian finds himself in a very serious world¹². The protagonist gains suspiciously evil powers through a unique progression system combining cultivation and traditional LitRPG elements¹².

In this installment, a subterranean power creates strange bedfellows for Jason and his friends¹³. This power’s growing instability has become both a threat and an opportunity to the warring surface factions³. Neither side can stop or claim the power alone, leading to an uneasy alliance with a reluctant Jason at the center³.