How to Solve an Esper's Separation Anxiety

A world where rifts can open suddenly anywhere, at any time, spewing out monsters. Ion (bottom), a B-class Guide to an S-class Esper, had been living a smooth and ordinary life as a powered individual. One day, he wakes up to find his Esper acting strange. After a long conversation, the conclusion they reach is that the Esper has crossed over from a parallel world. The problem is... the relationship between Bian and himself in this world doesn't seem to be very good. Furthermore, unlike his original world where they maintained a high matching rate of 98% for seven years, he and the Bian of this world have a matching rate of barely 76%, to the point where they are even performing mucosal gu...