Since ancient times, the tree Yggdrasil has towered over the country. There, a great labyrinth with monsters is the target of many adventurers: some to win glory, some looking for valuables only found in the labyrinth, and still others to uncover the mysteries seated there. At the foot of Yggdrasil is the liveliness town called Hi Lagaard, an adventurers town. And the gunner little girl Manarii is back... (Source: MU)