Is It Wrong To Try To Pick Up Girls In A Dungeon? II, Vol. 3 (manga)

"Haruhime has been captured once again, and Bell's efforts to save her ended in a crushing defeat at the hands of Ishtar Familia. When faced with Ishtar's schemes and the true nature of the "ritual" they're planning, Bell realizes just how powerless he really is. Wiping away tears, he stands back up, determined to stop the ritual and bring Haruhime back--but this time, his destination is Ishtar Familia's home base, the Belit Babili!"--