“black gate” !! Kasumi who was blown to the different world by the power of the “black gate”. While confronting the monsters that suddenly attack, the servant and the drop are blocked by making a contract with the odd-shaped warriors “A” and “吽”. Kasumi and his friends fell into a desperate pinch before the mighty power of Shizuku, but managed to overcome the crisis by activating the power of the mysterious girl Sora. However, they were exhausted both physically and mentally and were at a loss, and they began to hear dissonance.