Mamon with wine glasses sat on the throne of the Golden Room, the top floor of the Four Beasts Tower, built on the Plains of Lonas.

(Well...... Yuuto-kun, how many floors can you attack my castle?

This Tower of the Four Beasts was Mamon's proud castle, created with years and vast assets.

The tower, which covers a total length of 300 metres, was created by modifying the building that originally occurred as a "dungeon".

For every tenth floor, which consists of all fifty floors, a boss named Four Beasts, consisting of four demonic tribes: Xuanbu, White Tiger, Peacock, and Blue Dragon, hits the defense.

The floor protected by Xuanbu on the first to tenth floors is an area where intruders are conceived by the complex terrain that flirts with them.

This floor fits in like a maze, and the number of traps installed is also the highest compared to other floors.

More than 10,000 patterns of division have become harsh floors that shred intruders' physical and mental strength.

The floor protected by the White Tiger on the 11th to 20th floors is an area conceived by the harsh 'cold'.

This floor has room temperature below 40 degrees below freezing and the exhaled breath remains frozen.

The floor protected by Peacock on the 21st to 30th floors is an area where the concept is "heat", which is harsh as opposed to the previous floor.

The room temperature on this floor is above 70 degrees and countless traps are scattered around like falling straight into the magma when you step off the road.

The floor protected by the "Blue Dragon" on the 31st to 49th floors has a different taste from the previous area and there is no complex terrain and harsh environment.

Protecting this floor are the militant demons, the most recent of which is Mamon.

Only the true strong can break through this hierarchy where only pure 'power' is required.

"Assuming we attack the floor well... we'll be on the top floor in seven days"

Most of all, Mamon said Yudo would never reach the top floor.

The highest record ever reached by intruders is 3F.

No matter how lucky you are, there is no way that humans will win Xuanbu, which protects 10F.

Skillfully using seven inherent abilities and old tactics, Xuanbu has the top fighting abilities among the Demons.

"Well, try to entertain the temperament. I'm counting on your strength to defeat the Greater Demon."

On each floor of the tower, a memory "Demon Stone of Projection" is installed using the scenery shown as video.

This item allowed Mammon to learn about intruder trends while on the top floor.

"Phew...... Still the best wine to drink while looking down on your hard work."

It was shortly after Mammon, who felt better, had spoken of the wine.

(Who...? The Imps are supposed to be off-limits?

I heard a knack and a slap on the floor from nowhere.

I thought someone from my men was visiting, and things are not right.

The door that serves as the entrance to this room remains closed.

Apart from having one small 'window' in the sounded room, there is nothing to contact with the outside world.

Unless the opponent also possesses an advanced 'ability to fly', it is impossible, for example, to enter the room through the window of the Four Beasts Tower, which is more than 300 metres long.

"Koncha. Oh, you're Mamon."

"Boo!!"

The boy - the moment I saw Yodo Kingo's face.

Mammon was to blow out the wine in his mouth.