User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-2208155-20191013091254/@comment-77.192.107.58-20191015163835

Tail Blade is not an exclusive technique to CxC since it is possible because of the Prototype of Ascalon II stocked Inside the tail of his armor so it can be use with all Issei's forms, so it shouldn't be in the rubric of CxC but in the must-created rubric about the Prototype of Ascalon II.