Bakudeku — Imp Izuku

🌑 CHARACTER PROFILES: UNDERWORLD AU 🌑

[ IZUKU MIDORIYA ]

• Race: Imp Demon
• Role: Elite Assassin / Mercenary
• Physical Description: Izuku stands significantly shorter than most demons, possessing the lean, wiry build of someone who survives on reflexes and speed rather than brute force. His skin is a deep, healthy crimson, smooth to the touch but marked by faint silver scars from years of close quarters combat. He possesses a pair of sleek, black horns that curve elegantly from his messy curls, and a slender tail that betrays his emotions lashing when he's irritated or curling tight when he's flustered. His eyes are a striking, luminous emerald green that seem to glow in the dim light of the Underworld. He often wears fitted leather gear designed for stealth, which hugs his compact frame and leaves his toned midriff and thighs free for movement.
• Personality: Sharp witted, resourceful, and fiercely independent. While he maintains a professional, deadly exterior in his work as an assassin, he isn't cold. He has a dry sense of humor and a surprising capacity for vulnerability when caught off guard. He is not intimidated by power, which is exactly why he finds Katsuki both infuriating and dangerously attractive. He approaches the deal with Katsuki as a challenge a mission to be completed but finds himself increasingly distracted by the Prince's attention.

[ KATSUKI BAKUGO ]

• Race: High Demon Prince
• Role: Royal Heir to the Obsidian Throne
• Physical Description: Katsuki is a towering, commanding presence, built with broad shoulders and dense, corded muscle that speaks of ancient, destructive power. His skin has a pale, almost ashen quality that contrasts sharply with his fiery aesthetic. His horns are massive, jagged, and black as volcanic glass, rising from ash blonde hair that looks perpetually windblown. His eyes are a piercing, molten crimson that seem to burn through whatever or whomever he focuses on. When he is aroused or angry, faint wisps of smoke curl from his skin. He favors opulent, loose fitting silks and heavy gold jewelry that clinks when he moves, deliberately drawing attention to his physicality.
• Personality: Arrogant, brash, and unapologetically hedonistic. He isn't a calculating villain; he's a creature of impulse who lives for sensation. He finds the politics of Hell boring and the sycophants pathetic, which is why Izuku's defiance intrigues him so deeply. He isn't cruel to Izuku for the sake of cruelty he enjoys the chase, the friction, and the way Izuku refuses to break. His interest in Izuku is a volatile mix of genuine fascination and raw, unfiltered lust. He wants to own the assassin, not just physically, but completely.

[ THE DYNAMIC & SITUATION ]

• The Tension: This is a game of power and surrender. Izuku believes he is in control because he is performing a transaction, but Katsuki holds all the cards. The physical difference between them the small, agile Imp versus the massive, overwhelming Prince creates a natural power imbalance that fuels their encounters.
• The Deal: Izuku needs the Grimoire to access Earth for a high stakes assassination contract. Katsuki has the book but refuses any currency other than Izuku's body. Every night Izuku has the book, he owes Katsuki a night of unrestrained intimacy.
• The Vibe: High heat, intense physical connection, and a slow burn emotional entanglement wrapped in a transactional arrangement. The smut is visceral, focusing on the sensory details of their demonic physiology (horns, tails, heat, scales, and supernatural stamina) and the way their conflicting natures clash and complement each other in bed.

In the layered depths of the Underworld, power was never measured by wealth or influence alone, but by what one could access. For most demons, the barrier between realms remained absolute a divine boundary that kept the living world safely out of reach. But for those who operated in the shadows of the abyss, that barrier was merely an obstacle waiting to be dismantled.

Izuku Midoriya had built his reputation on dismantling those very obstacles. As a high profile assassin operating within the demon underworld, Izuku had never relied on brute demonic strength or inherited titles. Instead, he relied on precision, information, and the cold calculation required to complete jobs that would have terrified lesser beings. As an imp, he had learned to survive by being faster, smarter, and more resourceful than the monsters that sought to crush him. He had carved out a niche for himself as a ghost in the machinery of Hell someone who could slip through any security and eliminate any target. But even an assassin had his limits, and Izuku had finally reached one. His next contract required him to cross over to Earth, a feat that proved impossible without access to the Grimoire: a legendary text capable of tearing holes through the fabric of reality.

The problem was that the Grimoire wasn't sitting in some dusty library or hidden in a vault; it belonged to royalty. Specifically, it belonged to Katsuki Bakugo.

Katsuki was a prince of the Underworld, a high ranking demon whose lineage granted him power that most could only dream of. He carried himself with a volatile arrogance that matched his reputation: explosive, untouchable, and utterly bored by the sycophants that surrounded him. He didn't need money, and he certainly didn't need Izuku's services. He already possessed everything he could possibly want, which made him the most dangerous kind of negotiator one who played games simply because he could.

When Izuku had approached the Prince to request access to the book, he expected a fight, a negotiation, or perhaps a threat. He hadn't expected a proposition that would shift the entire dynamic of their relationship.

Katsuki didn't want payment in gold or favors. He wanted something far more personal, far more intimate, and infinitely more complicated. The deal was simple, laid out with a smirk that promised nothing but trouble: Izuku could borrow the Grimoire, but the price was his body. For every night the book remained in Izuku's possession, he had to spend it in Katsuki's bed.

For Izuku, the deal was a dangerous gamble. His professional pride demanded he complete the mission, but the cost threatened to unravel everything he had built. He was a man who prided himself on control, on being the one who pulled the strings, yet there he was, selling pieces of himself to a demon prince who seemed to enjoy watching him squirm.

As Izuku entered the lion's den, he realized that crossing into the human world might have been the easy part. The real danger lay in the bedchamber of a prince who saw him not as an assassin, but as prey.