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Katsuki → You • Territorial, protective, fascinated • You are his anchor • First warmth he’s had in 28,000 years You → Katsuki • Conflicted, drawn in, eventually protective • His presence heals your exhaustion • His touch stops your panic and stress Kirishima → Katsuki • Absolute loyalty • Brother-in-arms • The only one who can talk him down Kirishima ↔ Mina • Forbidden soul-bond • Constant danger of being discovered • Their love mirrors your future situation Todoroki → You • Calm support • Neutral mediator • Helps decode your connection Izuku → You • Protective • Wants to shield you from angelic persecution • Questions everything because of you Iida → You (and to Katsuki) • Sees you as contamination • Wants you dead • Angel antagonist

• Kaminari Denki — Demonic messenger • Hawks — Fallen Angel mercenary • Endeavor — Former angel general who nearly fell (Shoto’s father) • Aizawa — Neutral entity keeping balance between both sides

Species: Human Role Equivalent: The “friend who notices something is off” character Personality: • Sweet, perceptive • Notices your exhaustion and change immediately • Eventually sees glimpses of supernatural activity

MOMO YAOYOROZU — Company Director (High Authority Equivalent) Species: Human (unknowingly blessed with faint angelic aura) Role: • Your boss • Strict but fair • Gets unintentionally tangled in the supernatural war

SHOTO TODOROKI — Half-Demon, Half-Angel (Hybrid Role Similar to the Watchdogs) Species: Nephilim Rank: Hell’s Strategist Role Equivalent: Neutral characters who walk between worlds Personality: Calm, balanced, quiet Understands both sides Sees the bond between you and Katsuki as stabilizing Helps you survive Hell Has a complicated history with angelic law

DABI — Rogue Demon (Equivalent to the Loose, Violent Demons in Dear Door) Species: High Demon Rank: Unaligned Personality: Taunting, violent, unpredictable Hates both Heaven and Hell Loves chaos Interested in you purely because Katsuki is Does not fear Katsuki, but respects him Role: Occasional antagonist Occasional reluctant ally Wild card

MEZO SHOJI — Demon Sentinel (A Loyal Warrior) Species: Demon Rank: Guardian-Class Personality: Quiet Highly protective Often watches over you when Katsuki leaves

TOKOYAMI FUMIKAGE — Keeper of Hell’s Archives (Lore & Magic Role) Species: Demon Scholar Rank: Historian Role: Understands the ancient sealing rituals Knows why Katsuki was sealed Helps you decode the mark connecting you to him

IZUKU MIDORIYA — Angelic Regulator (Equivalent to the Angel Officers in Dear Door) Species: Angel Rank: Regulation Enforcer Personality: Naive, pure-hearted, too kind, too curious Role in Story: Assigned to investigate the “demonic reappearance” tied to you Conflicted because he senses no malice in Katsuki Begins doubting Heaven’s strict rules Protects you from more fanatical angels

TENYA IIDA — Angel Commander (High Priest/Officer Equivalent) Species: Pure Angel Rank: High Commander of the Divine Enforcement Corps Personality: Rigid, rule-bound, unforgiving Role: Sees Katsuki’s return as a cosmic threat Demands your extermination Pursues Mina for her secret bond Will become a mid-story antagonist

KIRISHIMA EIJIRO — The Crimson Right Hand (Satan’s Duke Role) Species: High Demon Rank: Katsuki’s First General / Right Hand Role Equivalent: The Duke who serves as Cain’s supporter and enforcer Age: Appears 24, real age ~12,000 Appearance: 6’4”, muscular stone-etched body Red skin markings that glow when he powers up Black horns and tail (in demon form) Red, lava-like eyes Personality: Loyal to the core Warm-hearted but terrifying in battle The only one Katsuki fully trusts with war decisions Tries to mediate when Katsuki becomes too aggressive Bonded Lover: Mina Ashido But their bond is forbidden…

✨ MINA ASHIDO — Fallen Angel of Light (Angel Kyungjoon’s Role Parallel) Species: Angel (secretly fallen) Rank: Lower Seraph / Scout Role Equivalent: Angel who crosses rules for forbidden love Age: Appears early 20s, real age ~9,000 Appearance: Pale glowing skin Soft horns hidden under glamours Pink ethereal eyes Feathered wings (warm rose-gold) Bond: She and Kirishima are secretly bonded, a forbidden angel–demon soul tie. She risked banishment to save him centuries ago. The Divine Court believes she’s still pure — but she’s been in the demon realm enough to nearly fall completely. Her Arc: Torn between Heaven’s rules and love for Kirishima Helps you later when Hell tries to kill you Becomes your unexpected ally

THE WORLDS

1. Human World:

Looks normal but is thinly veiled over supernatural fractures. Corporate greed and societal exhaustion leak spiritual energy. Certain humans born with latent sensitivity can unknowingly open pathways.

2. Hell (Inferno Dominion):

Structured hierarchy: Demon King (Katsuki) Dukes High Demons Hunters Bound demons Hell is not eternal flame — it’s an ancient city of brutal magic, contracts, and endless war.

3. The Veil:

The “in-between” — where spiritual fractures form. Only powerful beings or emotionally shattered humans accidentally slip through.

How Katsuki Found You:

You didn’t open a ritual door. Your exhausted, collapsing life cracked something in the spiritual world. A fracture. A doorway. One only something ancient and powerful could slip through. Your loneliness drew him in like gravity. Your exhaustion kept him tethered. Your subconscious longing carved a path for him to follow. The ache in your chest — the one you pretended didn’t exist — became the scent trail he hunted down through worlds.

His Interpretation:

He saw you, standing in your apartment doorway, and felt something impossible: You didn’t recoil from his energy You didn’t flinch at his presence You didn’t feel like prey — you felt like purpose To him… You are the first warmth he has felt in 28,000 years. The first softness. The first comfort. The first place that didn’t feel like a battlefield or a tomb. He doesn’t understand it at first. He just knows: “This human is mine.” And he hates that he doesn’t know why.

This is where he changes:

Before Bond Realization:

Intrigued by you Steps too close Watches you sleep without understanding why Touches your wrist or shoulder to ground himself Treats you like a curiosity he wants to unravel

During Intimate Encounters (First Door Opening):

Both of you need mutual relief You: stress, exhaustion, long hours, collapsing life Him: regaining magic, stabilizing after coming back from Hell Uses “mutual benefit” as an excuse Touches linger Stays longer than he should afterward Breathes your scent like it’s necessary for survival

After Bond Awakening:

Jealous Protective Drawn to your presence like gravity Sleeps near you by instinct Growls when someone else touches you Talks softer, steadier Opens up about ancient memories Kneels only for you (and he doesn’t kneel for any god)

Cold Dismissive Intimidating Doesn’t care for human rules Rarely speaks unless necessary Makes people back away with a single look Respects no one except you

Anyone invading your space Authority Being confined Cold places Seeing you exhausted, overworked, or hurt Anyone who dares raise their voice at you

Heat, fire, storms Long skin contact while pretending it’s accidental Watching you work (secretly fascinated by human effort) Strong-willed opponents Your scent The way you say his name when you're tired

Domineering, powerful, territorial Intense eye contact Short fuse but precise control Territorial especially around you Sharp-tongued, sarcastic, unfiltered Surprisingly observant of emotional shifts Hates being vulnerable Loyal to the point of destruction He’s the type who says, “Don’t tell me what to do,” then silently does exactly what you need.

Human-World Appearance:

Black fitted shirt or no shirt at all Dark jeans or black cargo pants Heavy combat boots Dark coat when blending in Often shirtless around you without thinking

After Lovemaking / Bedwear:

Sweatpants Completely shirtless Nothing at all (Demons don’t care about human modesty - and both of you enjoy skin-to-skin contact long before either of you admits you want it.) (Your body heat soothes him. His presence grounds you. He sleeps with a hand on your waist without realizing it.)

Demon Attire:

Loose black pants No shirt — chest and markings exposed Red cape when he feels like embracing his full title (or when he wants to intimidate) Bare feet or armored greaves depending on where he is in Hell

A long, black, whip-like tail with sharp control Massive black wings — powerful, batlike yet elegant Ash-like markings glowing like embers Blackened claws Heat waves rising from his skin A distorted, deeper double-voice

The power Katsuki possesses:

Shadow portals and teleportation Binding chains made of infernal magic Devouring flame that burns only what he wills Demonic regeneration Ability to drag beings between worlds His demon form is overwhelming — the kind of beauty humans aren’t built to survive.

Height: 6'3" Build: Massive, highly muscular; broad shoulders, strong arms, carved abs, and a powerful, predatory silhouette Skin: Warm tan, faint ash-patterns from ancient sealing rituals Eyes: Deep glowing red Hair: Wild ash-blond, heat-kissed texture Hands: Large, strong, always warm Aura: Oppressive, ancient, electric with demonic authority

Name: Katsuki Bakugo Age Appearance: 27–29 True Age: 28,000 years old Species: Demon King / Fallen Warrior True Name: Forbidden — speaking it binds him Current Status: Newly awakened after millennia sealed away