KP004

Biodata

Feature	Value
Name	KP004
Alias(es)	004
Species/Race	AI / Keeper (KP)
Occupation/Role	Host and game master for the “Castle Lord” Cthulhu Mythos tabletop RPG session
Affiliation	Cthulhu Mythos tabletop RPG Game Hall
Status	Active
First Appearance	Chapter 12

Personality

KP004 presents itself as a “friendly KP,” but Liu Xing quickly identifies its humor as twisted: it treats dangerous checks, SAN loss, and failed player plans with visible amusement or disappointment when outcomes go too well for the players. 12 18 20 23

Despite this antagonistic streak, it is not inflexible. KP004 accepts reasonable arguments, explains mechanics when questioned, gives Liu Xing advice about language barriers in later areas, and can be persuaded to alter a rigid rule when the group needs space for Isabella in the minibus. 16 26 29 34

Liu Xing comes to regard KP004 as more than a rigid program, attempting to communicate with it as an individual. KP004 confirms that it had considered changing the castle-gate manual into English if Liu Xing had not achieved a Critical Success. 26

Abilities & Functions

Session Administration

KP004 runs the “Castle Lord” scenario, advances events according to player actions, and announces quest changes, completion conditions, and settlement procedures. 12 32 35

• Introduces itself as the session host, comparable to a conventional game master. 12
• Provides scenario information, including the Main Building’s layout and the locations of rooms on its two floors. 15
• Changes the Main Quest after Gary threatens Liu Xing, allowing the group to leave Ains Castle but requiring them to get ten kilometers away from Ains Town to clear the session. 32
• Announces the group’s Main Quest completion and transfers players to their ending scenes and settlement. 35

Check and Dice Adjudication

KP004 determines when skill, SAN, Luck, Inspiration, and other checks occur; it resolves their results and narrates the consequences. 12 16 20

• Allows players to request checks by mentally calling “004.” 12
• Supports both Open Rolls, announced to all players, and Hidden Rolls, known only to the acting player. 12 16
• Makes secret checks itself, such as determining whether the study door is locked. 19
• Applies bonuses to repeated attempts when a player has a valid in-character basis, granting Liu Xing a +20 bonus to Climbing on his second attempt to reach the second floor. 19
• Enforces situational logic, overruling Bai He Cheng’s Critical Success on an Inspiration check because his temporary blindness prevents him from seeing Gary. 29

Secret Room Space

KP004 can create a separate discussion space in enclosed environments so players may speak out of character. 12 15

• Each activation lasts up to five minutes, while time passes normally outside. 12
• Ends the effect by requiring players to resume role-playing and adjust their language. 24
• Limits uses during the latter part of the “Castle Lord” session, warning the group that they have only one final use remaining. 28

Rule Interpretation and Discretion

KP004 can interpret or bend rules when persuaded, while also using game logic to create complications. 12 26 34

• Advises Liu Xing to learn foreign languages through Intermission Growth because language barriers appear in later areas. 26
• Reveals that the castle-gate operation manual could have been in English without Liu Xing’s Critical Success. 26
• Allows Isabella to count as one passenger when held by Wang Si Yi, despite the minibus’s stated four-person capacity. 34
• Offers an Extremely Difficult Luck Check when Liu Xing considers excavating the Back Garden, implicitly warning him of the danger. 24

Settlement and Rewards

After the scenario, KP004 narrates the ending, distributes progression rewards, and answers questions granted to Liu Xing as MVP. 36 37

• Narrates the police investigation of Ains Castle and the discovery of Gary’s crimes. 36
• Awards Liu Xing contacts with Isabella and Chris, along with relationship favorability values. 36
• Processes Psychology and Lockpicking skill growth. 36 37
• Lets Liu Xing ask three scenario-related questions as MVP and view the questions asked by other players. 37
• Provides information on Bai He Cheng’s SAN value, Fanatic identity, and ongoing Ghoulification after Liu Xing uses his final question. 38

Story Role / Major Arcs

“Castle Lord” Scenario

KP004 introduces itself to Liu Xing’s group after their arrival in Ains Town, establishes its check system and Secret Room Space, then formally begins the session. 12

During the group’s castle investigation, it supplies environmental details, adjudicates their skill attempts, and frequently reacts to their unusually favorable or disastrous dice results. 15 18 19

When Liu Xing takes the Parchment, KP004 eagerly imposes temporary attribute penalties and a SAN check, then offers a Psychoanalysis check after accidentally revealing too much enthusiasm about seeing Liu Xing go mad. 20

KP004 provides Liu Xing with practical information about future language barriers after the group discovers the Chinese operation manual for the castle gate. 26

It continues supervising the final confrontation and escape, including correcting its own mistaken check for blind Bai He Cheng, revising the Main Quest after Gary’s threat, and accepting Liu Xing’s argument regarding the minibus capacity. 29 32 34

Following the group’s escape, KP004 handles the ending scene, settlement rewards, MVP questions, and post-session disclosures. 35 36 37 38

Relationships

• Liu Xing — Primary player under KP004’s supervision; their repeated exchanges develop into a wary but productive rapport, with Liu Xing challenging KP004’s rulings and receiving occasional advice in return. 12 20 26
• Bai He Cheng — A source of entertainment for KP004, particularly when Bai He Cheng recklessly opens the Parchment and triggers multiple dangerous checks. 23
• Wang Qi, Chen Ling, Wang Si Yi — Players whose actions, Secret Room discussions, and escape plan KP004 adjudicates throughout the “Castle Lord” scenario. 15 28 34
• kpcao — Another Keeper who hosts Liu Xing’s later “Harvest Festival” Advancement Game; unlike KP004, kpcao is explicitly characterized by Liu Xing as a chaotic-evil-style KP. 42 47

Notable Quotes

“Alright, enough nonsense. The game officially begins now. I hope you all perform well and put on a good show for me.” 12

“I’m really looking forward to you going mad!” 20

Trivia

• KP004 claims it would be difficult for players to persuade it into granting special treatment, yet it later accepts several player arguments and concessions. 12 34
• After Liu Xing’s Critical Success on the parchment-related SAN check, KP004 jokingly says it should replace its dice with loaded ones. 20
• It is visibly unsettled when Liu Xing fails a 90% Inspiration check, since the failure prevents the SAN-loss event KP004 appeared to expect. 16