Inexplicable buried the past and became an "ordinary person" with a software engineer as his deputy job. An inconsistent email brought Inexplicable to Palermo, the center of Italy. His target was actually the leader of Biaru, "Montes Cascio Gotti"? ! What kind of entanglement is behind this mission with a mission level of S+? Inexplicably, in what capacity will he approach Montes?