Valentine's Day is two weeks away, but Chiaki already has admirers fighting for the right to give him chocolates! However, when Orthros kidnaps Chiaki, it kinda kills the romance. Can the gang find a way to the underworld to mount a rescue? More importantly, can they accomplish their mission once Or...

Valentine's Day is two weeks away, but Chiaki already has admirers fighting for the right to give him chocolates! However, when Orthros kidnaps Chiaki, it kinda kills the romance. Can the gang find a way to the underworld to mount a rescue? More importantly, can they accomplish their mission once Orthros's true scheme is revealed...?