Level. 17 Someday We Shall Bid Farewell to These War-Torn Days

Level.17 Let's say goodbye to the day of battle Someday (temporary M.T. title) (いつか戦いの日にさらばと告げよう) is the 17th volume of the Hai to Gensō no Grimgar light novel series.

Synopsis
(Temporary M.T. synopsis)

The expeditionary force of the Kingdom of Arabakia became independent as a new frontier army with Jin Mogis as the general commander. Formed an alliance with the Goblin King. The next move is to capture the "Mt. Grief" where the enemy troops centered on the orcs are sitting. Haruhiro and his friends, who were tasked with disturbing the enemy army from the inside as a separate unit, decided to challenge the underground "graveyard" of Mt. Grief. However, all that was waiting for them was unimaginable difficulties and strong enemies. Far from the success or failure of the Mount Grief capture strategy, is it possible to survive? This ...!? A joint battle with former friends. Feelings that are complicated in the death battle. Is the destination hope or despair?