Chapter 7

## Chapter Chronology

**The Secret of Upside-Down Castle** (逆さ城の秘密, *Sakasa-jō no himitsu*) is the 7th chapter of the *Build King* manga series.

## Summary

Tonkachi wonders what is up with the castle, since no matter how many times he hits the castle with his Vigor Hammer, it won't budge. Tonkachi comments about how hard the castle is, but notices that his blood is rushing to his head and flips himself right side up by hanging on a ledge. Tonachi realizes that he doesn't have any energy left after hitting the castle with his ten-meter hammer, and falls to the forest below.

In Battville, Batt tells Cork that he entrusts this task to her. Cork tells Batt that he can walk normally outside of the castle, which Batt replies that he thinks better this way(Upside Down). Batt tells Renga that he can use the tools they find in the castle since there should be some ultra-rare ones mixed in too. Batt then heads off, with his staff, to set the gang of House-Bandits straight. Cork comments about how they all didn't have to go, but figures that they were actually afraid of being in the castle when it's about to fall apart.

Tonkachi suddenly shows up and says that the castle is far from falling apart, which Cork and Renga are shocked to see Tonkachi and wonder where he has been. Tonkachi says that he didn't make a single crack, no matter how many times he hit the castle with his Vigor Hammer. Cork and Renga wonders if Tonkachi is alright since it looks like he is wasting away. Tonkachi wonders if the castle is really on the brink of collapse, which Renga says that Tonkachi's hammer didn't work while Cork wonders if it is impossible.

The three head inside the castle, which Cork reveals that she has had other builders try to renovate the castle before but no one could even get past the demolition stage. Cork tells them that her father told her that the castle has never suffered a single scratch from any attack through history, since its made of the strongest materials. Tonkachi says that the castle is in shambles, which Corks replies that the castle may be rotting away for another reason. Renga says that they can't start the renovating if they can't tear it down, and that they will need to learn a little more about the castle itself. Tonkachi gets up and says that he is ready to get back into action, and demolish this place which Cork says that that was fast. As Tonkachi continues to attacks the castle, Renga starts to examine the castle.

Cork looks out a window and remembers when she first met Batt. Batt found Cork in a forest, that was a D-rank environment with monsters crawling around it. Batt asks if she has not parents and states that she will die if she remains here. Cork says that it's an upside-down creep, which shocks Batt and everyone else, and says that Batt is way more suspicious than a monster.

Later, Tonkachi stops attacking the castle and says that it's no use. Tonkachi says that he can't make a single crack and wonders what's the deal with this castle since it's such a pain. Renga shows up and asks if Tonkachi has a minute, which Tonkachi asks if Renga has figured something out. Renga reveals that a shovel in the castle, which Tonkachi says that Renga found a tool but states that it doesn't have a handle. Renga says that Tonkachi is right but reveals that shovel can dig a hole in the castle. Tonkachi is shocked that the shovel is a special tool that can easily dig a hole in the wall. Tenga says that the Shovel maybe one, but reveals that the shovel can't make a dent on the outside despite easily breaking the wall inside. Tonkachi states the the exterior wall of this castle is way to tough and wonders how they built it. Renga asks if Tonkachi will come with him to the village above, which Tonkachi is confused by this.

As the two head to Battville, Renga reveals that he wants to hear what the villagers have to say since he thinks that they can give him a clue. Renga reminds Tonkachi of what their master told them about how construction is closely tied to its environment since its important to listen to their client's request but they must always survey the site. Shovel also tells them to look at the environment and there should be a hint somewhere as to how to five form to the client's wishes.

Tonkachi and Renga talks to a villager that reveals that even through the cape is surrounded by a D-rank environment, the monsters stay away from the cape and explains that that is the reason humans are able to live here in peace. Tonkachi says that there are definitely a ton of monsters when he fell into the forest below, which Renga is shocked that Tonkachi fell down to the forest. Another villager reveals that the people who live in Battville have lost their homes and parents to disasters, and that the Batt family saved them. The Villager reveals that the Batt Family are scorned by society because they are a monster clan but they're their saviors. Tonkachi and Renga then look at the castle from afar, which Tonkachi comments about how Cork is just like them since she doesn't have any relatives. The two remember a villager comments about how Cork studied a lot about construction so that she could rebuild Upside-Down Castle. The Villager also reveals that Cork grew fond of the Batt Family and was eventually taken in as the King's daughter, and now Cork lives at the castle like a princess. Tonkachi remembers Cork asking them to rebuild her house, which Tonkachi says that he somehow wants to make Cork's dream a reality.

Renga looks at the castle and suddenly realizes something, which Tonkachi wonders what it is. Renga asks if Tonkachi remembers that Dragon Spine Road from when they first came here, which Tonkachi says that he does and that its those giant dragon bones that is a strip of land that is safe from monsters. Renga explains that he saw a portrait of the Dragon inside the castle from back when it was alive and that the dragon ruled this continent with a single fang. Renga says that Cape Batt looks exactly like the dragon's face, which confuses Tonkachi. Renga says that Dragon Spine Road and Cape Batt might be connected, and that he understands why the House-Beast won't come anywhere near the cape. Renga explains the cape is the dragon's upper jaw and the castle is the dragon's fang. Tonkachi says that most of the dragon's skill is underground, which Renga says that Tonkachi is right. Renga asks if Tonkachi can hit the castle with the back side of the Vigor Hammer, which Tonkachi says that back of the hammer.

Tonkachi and Renga return to the castle, and tells Cork that they need to get all the furniture and interior decorations out of the castle. Cork wonders why, which the two reveal that they solved the mystery of the castle and that they are now going to demolish it. They reveal that the castle with build right over the tooth, and explain that the monster stay away because the dragon bones retain an incredible amount of vitality that they it the monster think its still alive. They also explain that not the castle but the fang is rotting away, and is being replaced by a new fang. Renga says that they should be revitalize the castle instead of trying to damage it.

Tonkachi heads outside the castle and hits the castle with the back of the Vigor Hammer. Tonkachi thinks about how this is the first time that he is hitting something with the back side of the Vigor Hammer at ten meters, and how it feels like that the hit took all of his own vitality along with the damage and fatigue is like nothing when using the front. Tonkachi says that he will use every ounce of his energy, and hits the castle again. Tonkachi says that he needs more and that this isn't gonna beat him, while hitting the castle again. Tonkachi spits out blood, which Renga and Cork worry about Tonkachi. They try to warn Tonkachi, but Tonkachi says that he will give shape to the client's wishes no matter what. Tonkachi proclaims that this is his job and hits the castle multiple times, which Renga and Cork notice that the castle is falling apart. Tonkachi tells the Upside-Down Castle to rise again, which the castle explodes.

## Story Impact

* It is revealed that the Batt Family saved all the humans that live in the Battville, since they have lost their homes and parents to disasters.
* Cork is revealed to be the adopted daughter of Batt.
* Upside-Down Castle is revealed to be made from the tooth of the Dragon King that ruled the continent, and that the fang is rotting away so that a new one can replace it.

## Characters by Appearance

* Tonkachi
* Renga
* Batt
* Cork
* Batholomew
* Shovel (Flashback)

## Site Navigation

 **Volume 1**