When Haga’s party meets the meta AI responsible for the Principality of Sai, Alba, their opposition of Alba as king results in Alba teleporting Haga and Amano to the 1000th floor of the underground ruins, nicknamed The Diamond. What awaits them is a series of terrifying trials and a chance meeting with a new debugger.

After losing Akira when Entermation Inc. turned their employees into NPCs, Haga and his party decide to complete their jobs as debuggers by moving on to the next country. They hurry towards the capital of Liono, but more challenges stand in their way…

Nikola is just a village girl working at the inn...until the day dragons invade, and she meets Haga, a scholar of everything around him. He's a part of an elite society called "Seeker," created to address a series of maladies plaguing their usually peaceful world. But both Nikola and Haga have secrets they hide...ones that will change each other's very existence...

The once powerless NPC, Gaydle, was modified by Yamanaka, another King’s Seeker like Haga, and received an incredibly powerful body. But the warriors of the mountains have had it with his barbarous ways. It doesn’t take long for Haga and his party to be dragged into their deadly battle.

After meeting back up with Nikola and retrieving his debugger stone, Haga is once again swept into major trouble when a god-versus-god main quest activates! The final battle against the Entermation Inc. AI employees finally begins!

“I'll become stronger in my own way…as a villager (NPC) walking down the dark route of an assassin.” A year has passed, and Nikola has transformed into an assassin. After being separated from Haga and the rest of the party, Nikola found herself trapped in the assassin training facility, The House of Stolen Hearts. After a series of grueling training, Nikola's choices led her to the most unexpected outcome…

"I've decided to live naturally in this world." After the assassination of the boss of Asobing Inc., his former employees took over the castle and they turned their violence towards Haga and his party. Meanwhile, the mysterious black-armored knight who infiltrated the castle has their eye on Haga for their own purposes. In this dangerous, other world, the King's Seekers are now forced to choose how they're going to live in this unfinished world.