The Hero Life of a (Self-Proclaimed) "Mediocre" Demon!, Volume 2

A FATHER OF FURY! After unintentionally enslaving Sophia and Yukino, Chrono and the Special Exploration Unit have been searching the previous Demon Kings' dungeons for anything that might remove the bonds of domination. The Demon King remains hopeful that a solution will eventually be found in a dungeon, but time is running out. Sophia's father, the frighteningly powerful Vampire King, is coming to visit his precious daughter, and if he finds her enslaved to Chrono, his rage could destroy the entire city!