At this stage, Casio's thought process was very clear. Although he already possessed the combat strength of an Ultimate Fighter, it was difficult for him alone to make a significant impact on the Door Organization. The situation with the Dark Hunt Organization was different, as its leader, the Chief Inspector of the Black Mechanism, was likely also a peak expert with the combat power of an Ultimate Fighter level. Coupled with the enormous Hunters Association and many combat units of Fighter level, they were enough to draw out more tactics from the Door Organization.
What Casio wanted was to join forces with the Chief Inspector of the Black Mechanism and test the mettle of the Door Organization. Apart from the levels that almost never appeared, such as Saint Fist and the Ultimate Dark Entity, the two strongest individuals of this era were standing together. Even the Door Organization, would probably have to show sufficient respect.
