Miraculum: The Last Revelation/The Calburn Kingdom

Calburn (カルバーン)
Noteable Villager Gossip: Calburn Castle can be found east of town, but the drawbridge is up so there is no way of getting in. A very powerful Dark Knight, Brocken, is currently at the castle. Dark Knights are said to have the strength of 100 ordinary soldiers. The town elder was once a court mage at the castle. A child was recently attacked by a monster outside of town and is currently being treated at the Elder's house.

Go to the Elder's house at the south end of town. The elder first mistakes the heroes for bandits, but when they ask about Johnny, he leads them to the child. Johnny is doing well, and Jay asks the elder if he will continue to watch over him. The Elder and agrees, on the condition that the heroes help him in return. The Elder needs to get to the village of Linger, which can only be accessed by going through Castle Calburn. Fortunately, because he once worked in the castle, the Elder knows of a secret passage via the underground waterway; the entrance of which just happens to be the well in his backyard.

Make preparations and enter the well.

Calburn Underground Waterway (カルバーンの地下水路)
First off, the treasure. Pay no mind to the elder's commands, they aren't very specific anyways. '''At the start, take the path directly below the entrance ladder until you spot a chest: Healing Tonic. Continue down the same path as before and at the bottom, you'll bump into another chest: Titanium Sword (チタンソード). Follow the path right and north until you see the third chest: Iron Helmet (鉄の兜). To the very near right of that chest is another: then head all the way left for a chest: Bible.'''

'''Backtrack all the way to the entrance ladder and head all the way left for the fifth chest: Hoof of the Heavenly Horse (天馬の蹄). Head south a bit for the sixth chest: Feather Cap (羽帽子). Now, take the southeast path from that chest and then the first path to the right. At the next fork, head all the way south and follow the long and winding path to the final chest: Healing Tonic. From here, head north to run into a group of ninja.'''

Battle against 5 Ninja

After the ninja flee, proceed north and you'll wind up in Calburn Castle.