A boss rush begins as we aim to conquer the Demon Lord in the end content of the 10th floor!! Before Maple's real life gets too busy, we want to defeat the final boss, the Demon Lord, lurking in the 10th floor together! United under the goal, the 【Kaede no Ki】 team has started searching for key items for the Demon Lord battle. However, even as the time limit approaches, having fun is the most important thing! Iz, who modifies her flying machine to the level of a 【Machine God】, and Kasumi, who dives deep into the Japanese-style area. Maple and Sally are also enjoying their journey together! In the midst of this, during a quest, Maple suddenly gets a hint for further status ailment immunity, making the most dangerous adventure even less stressful!?