Dies Irae, Ren Fuji, Blue messy hair, blue eyes, modern casual outfit, white scarf, navy jacket, cream shirt, black pants, cross necklace, serious expression, youthful appearance, supernatural aura, dramatic pose, glowing background, demonic arm transformation, red and black energy, clawed gauntlet, curved blade extension, crimson aura, cursed weapon, gothic design, otherworldly power, divine relic, manifestation of willpower, symbolic of inner struggle, destructive force, high contrast color scheme.
