Unforgiven Heart

"Unforgiven Heart Yurusarenu Tsumi is a haunting cyber-rock anthem inspired by the emotional and visual depth of Demon Slayer: Infinity Castle Arc. With blazing guitar riffs, atmospheric synth layers, and a storyline driven by unrepentant guilt and inner rage, this track paints a powerful soundscape for anime fans craving intensity. It's a sonic embodiment of the struggle between sin and redemption, tailored for listeners drawn to dark emotional arcs, epic battles, and cinematic rock.