Sven

Sven is a Cube cadet whose insecurity and desire to meet others' expectations leave him vulnerable to a devil's offer. His contract with Asmodeus magnifies his fixation on Chae Nayun and ends in a violent confrontation.

Biography

The Dungeon contract

During a team Dungeon exercise, Sven is paralyzed by a trap and becomes consumed by guilt, inferiority, and fear that he will disappoint his parents and country. A bewitching voice offers him the strength he craves for a seemingly small price, and he accepts. The contract changes his demeanor: his eyes become lifeless, his body seizes around demonic energy, and Kim Hajin recognizes that the cadet is moving toward a loss of control. (Chapters 25–28)

Fixation and attack

After the exercise, Sven draws closer to Chae Nayun through messages and their shared hunting club, arranging to meet her early and hunt alone together. Kim Hajin intervenes after recognizing Asmodeus's energy in him, but Sven still follows the pair into Gangwondo and eventually attacks Chae Nayun as a Djinn. She defeats him despite suffering serious injuries, and the incident causes the hunting club to be suspended while Sven becomes an example of the dangers of direct devil contracts. (Chapters 29–33)

Appearance and personality

The supplied chapters emphasize Sven's black, lifeless eyes after his contract rather than a broader physical description. Before accepting power, he is burdened by self-loathing and pressure to become a great Hero; afterward, those emotions harden into secretiveness, obsession, and hostility.

Gifts and abilities

Sven receives demonic power through a direct contract with Asmodeus. The contract grants enough strength for him to fight Chae Nayun, but it also amplifies emotion and obsession. The chapters do not establish a named personal Gift or give a fuller mechanical account of his Djinn abilities.

Relationships

• Chae Nayun: Sven becomes fixated on her, engineers time alone with her, and ultimately attacks her.
• Kim Hajin: Hajin notices Asmodeus's energy in Sven and repeatedly tries to keep him away from Chae Nayun.

Items

No individually scoped notable item is established for Sven in the supplied chapters.