In the "threshold" - the hell of rules intertwined with reality, Shu Shu, a sweet-smiling girl in Lolita, and Jin tide, the whip-wielding lady in black, are twin evil stars tearing apart the darkness. Shu Shu's giant hammer "Bone Crusher" specializes in smashing tricks: when the merry-go-round makes people laugh to the point of splitting their skulls, she blasts the core to free the souls; when the hospital rules make living people into transparent specimens, she overturns the operating table and walks in blood. Jin tide's shadow whip was born to protect her: the poisonous sting on the tip of the whip strangles traitors, and the torn space cracks are only to pave the way for her. The two are each other's only salvation - the only remaining anchor of humanity against Shu Shu's bloodthirsty nature is the strawberry cake that Jin tide hastily handed over; Jin tide's broken soul that escaped from the laboratory only sleeps next to Shu Shu's blood-stained skirt.
The shadow of the Ark Project shrouded the threshold: the mad doctor imprisoned Shu Shu's mother and recycled Jin tide as a weapon. The two heroines lead an army of strange puppets into the abyss. When the laser net of the flesh and blood factory cuts off the retreat, when the Titan bones in the ancient battlefield crush the ribs, Shu Shu hammers dye with divine blood to awaken the power of the Titans, and Jin tide whips into the void to cut off the shackles of control. They looked at each other and smiled sweetly on the ruins of the collapsed laboratory: "Rules? They are just waste paper to be torn up."
