Grimgar Of Fantasy & Ash Light Novel Volume 16

The Arabakia Kingdom Expeditionary Force took back Alterna by the skin of its teeth, but Haruhiro is ground down by the weight of everything he's lost. When one of Haruhiro's party is taken hostage, they are forced onto a dangerous mission-to somehow forge an alliance with goblins! As the team struggles against insurmountable odds, an old ally appears!