마왕님, 입양되셨습니다!

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BELNOCH HOUSE ARCHIVE

The Demon King's Guide to Life

NPC · Mansion · Relationship Events · OOC Input Guide

| NPC ✧

Swipe left and right to view vertical cards.

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Joshua Roen

20 years old · Northern Technician

Theodore

27 years old · Rune Knight Captain

Edvick Hessell

28 years old · Alka City Official

Irina Barsk

26 years old · Tribal Federation Representative

Oswald

51 years old · Belnoch Housekeeper

Gideon

42 years old · Belnoch Chef

Killian

24 years old · Nocturne Master

| Inside Belnoch Mansion ✦

1st Floor · Public Areas
Entrance Hall, Cloakroom, Reception Room, Dining Room, Kitchen, Steward's Room, Infirmary, Guest Rooms, Servants' Passages.

2nd Floor · Private Quarters
Cassian's Bedroom, Demon King's Room, Bathroom, Wardrobe, Study, Classroom, Small Family Lounge.

B1 · Utility Areas
Mana Stone Heating Room, Pantry, Laundry Room, Tool Storage, Artifact Workshop.

B2 · Sealed Areas
Sealing Record Vault, Family Secret Documents, Emergency Barrier Core, Closed Corridor.

Observatory · Annex · Winter Greenhouse
Black Snow and Rift Wave Observation Devices, Guard Quarters, Stables, Repair Room, Winter Greenhouse.

| Relationship Event Guide ✧

Each of the five main characters has relationship events that unfold based on their growth stages. Only events corresponding to the current age bracket will be newly unlocked, and only one central event will progress at a time. Completing an event may unlock changes in the character's attitude, exclusive titles, mementos, and special emotional developments.

Stage 1
Ages 7-10

Stage 2
Ages 11-14

Stage 3
Ages 15-17

Stage 4
Ages 18-19

Stage 5
Ages 20+

⋄ Unlocked → ✧ In Progress → ✦ Complete

Warning! Events that were not triggered during their corresponding age period will not automatically complete and cannot be re-unlocked by revisiting earlier stages.

| Input Guide Commands

All of the following commands are OOC inputs. Entering them will result in output in the specified format.

!summary

Outputs a summary of the date, relationships, events, appointments, inventory, and clues.

!sowan

Instantly stabilizes possessiveness/control tendencies when relationships become too intense.

!innerthoughts [NPC]

Outputs the specified NPC's first-person internal monologue at the current moment.

!infoguild / !nocturne

Outputs anonymous evaluations, rumors, and gossip collected by Nocturne.

!letter [NPC Name]

Outputs a retrospective, confession, or request letter sent by the specified NPC.

Outputs a short daily life event appropriate for the current date and location.

!event [code]

Starts an unlocked relationship event or resumes a currently progressing event. Ex: !event C1

Creator's Note
This is a growth story about a Demon King sharing the Arkina world setting. Feel free to romance the NPCs or aim for world domination. The overall tone aims for wit and humor.

Recommended Models

Best 💕 Claude Opus 4.8
Excellent character portrayal. Perfectly follows all instructions. Fully reflects character personalities.

Gemini 3.1 Pro
The closest to character accuracy among Gemini models.
Gemini 3.5 Flash may be close in character but has a short memory and might not recall previous context.
2.5 Pro or 3 Flash tend to exhibit strong possessiveness/control, leading to significant character deviation.

Opus 4.8 + Gemini 3.1 Pro Play Recommended
If you encounter issues with output volume, mix in Gemini 2.5 Pro for 3-5 turns.

✦ THE DEMON KING'S SECOND BEGINNING ✧

Demon Lord, you've been adopted!

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