Reia is a valkyrie from the Ikusa Otome Valkyrie continuity, characterized by blonde hair extending past her hips, red eyes, and standard armor including a helmet.

In *Ikusa Otome Valkyrie 2*, Duke—leader of the Dark Knights under the demon king’s army—captures Reia and condemns her to execution. Fellow valkyrie Ariya intervenes with Odin’s Gungnir, overpowering the demons. Reia unexpectedly betrays Ariya by stealing her silver ring, the source of valkyrie power, causing Ariya’s capture. Both valkyries become prisoners and sex slaves under Duke’s control. This betrayal erodes soldierly sympathy for Reia, despite her victim status.

Reia’s degradation escalates through physical and psychological torment. A slime creature fuses to her body, inducing a hermaphroditic transformation shared by valkyries like Freya. Her mental state deteriorates, culminating in shattered resilience. When Skuld urges rebellion against orc captors, Reia recalls her vow of eternal subservience, rejects freedom, and declares herself irredeemable.

In *Ikusa Otome Valkyrie G*, Reia remains imprisoned with Ariya and Hildegard in Duke’s castle. Her will and sanity destroyed, she exists in perpetual enslavement to physical pleasure. Duke later sells her into prostitution alongside captured valkyries, including his former subordinate Loki, reinforcing her subjugation.

The character embodies themes of brokenness and perceived complicity: soldiers and narratives falsely interpret her physiological reactions during violation as enjoyment, inciting slut-shaming.