I'm a monster in Demon King's Castle

"In what year of the Kai calendar did you enter the Hall of Joy?"

"In the past hundred years, have there been any changes in the Hall of Joy?"

"Have you ever seen the Lord of Authority of the Hall of Joy?"

"If a private dance is a dream of a certain guest, then what are the things brought out from the dream?"

… …

Tom asked several questions in a row, and Don Giovanni answered everything he knew, not caring about the interrogation in the reception room, and was very cooperative.

He even expressed his willingness to cooperate with Scholar Tom's research, telling him what the Chaos Continent was like a hundred years ago.

Of course, Don Giovanni's knowledge is limited, he can only talk about what he has seen—these memories are mixed with the memories of the dance over the past hundred years, and it is impossible to tell how much is real.

Don Giovanni was invited to the demon dance in the 183rd year of the Kai calendar. At that time, the famous Continental Iron City Defense War had not yet begun. Don Giovanni danced for a lifetime and never came out again.

He is not sure, and does not care who is the Lord of Authority of the Hall of Joy, but only mentioned that a powerful warrior who did not understand music broke into the dance, interrupted the music, and eventually provoked a seven-headed, ten-horned demon holding a golden cup, who squeezed the warrior into juice and drank it into his chest and abdomen.

Don Giovanni even danced a few songs with the demon, and the demon's seven heads danced happily.

Judging from Don Giovanni's description alone, Li Yue is not sure whether this is Bao'er, the Lord of Authority of the Hall of Joy, but it is unlikely, because Bao'er should also be a Nightmare Succubus.

Regarding the last question, Don Giovanni still feels that the truth or falsehood does not matter. As long as the things taken out of the dream can be used, they are real.

The scholar and the three demon princes were silent for a moment, quietly watching the flies brought out rising and falling around the merchant's corpse, continuing to dance the dance of growth.

"Can this be used?" Li Yue's Demon Illustrated Handbook did not respond to the flies, and he did not see them wanting to go anywhere. He was not sure whether he had obtained what he wanted from this trip to the Hall of Joy.

"When you touched the invitation, you were teleported to the Hall of Joy?" Tom was still observing.

The path of the scholar gave him great patience, far less impatient than Li Yue.

"Yes, that's right."

"But when you came out, you were in the Maze Corridor again?" Tom took notes quickly on the paper.

After receiving a positive answer, Tom pointed to the three guests hanging in the reception room, a corpse and a few flies, and gave his opinion.

"First of all, let's assume they are all real."

"Of course I'm real." Don Giovanni's body is still withering, and his vitality is slowly draining away.

Don Giovanni fell in love with the brain shrinking beside him, as if only it could bring him warmth in the whole world.

"Then… the Hall of Joy is not limited to the Demon King City. Some of its areas lead to other places."

"Otherwise, you wouldn't have been directly pulled in, nor would you have come out together from inside."

"Even this invisible passage will spread due to the spread of the invitation."

Tom said while recording, "This is the only way to continuously expand the scope and absorb all kinds of joy…"

"The medium connecting the areas is likely to be dreams." As a member of the Library, Tom certainly knew something about demons like the Nightmare Succubus.

"So it's a whole area connected by dreams?" Li Yue understood Tom's guess.

"Will it be connected to the Library now? Will Minnie and Mini be pulled away while they are sleeping?" Li Yue was not ready to face the threat of the dream dimension.

"If the Lord of Authority of the Hall of Joy doesn't notice, the possibility of this happening is not high." Tom shook his head, "Weaving dreams also has a cost, otherwise there is no need for the Hall of Joy to create invitations to limit the number of people entering."

"If everything is established, the most beneficial application method for the Hall of Joy should be to maintain the number of guests in the dream after expanding the scope of the dream, and continuously extract joy."

"And according to your experience at the demon dance, even if Minnie and Mini, or I, are pulled into the dance, as long as you don't encounter demons with abilities similar to yours, it should be a kind of enjoyment and there will be no danger." Tom glanced at the three demon princes.

"The key to enjoying the demon dance is not to be controlled by the heart, not to be forcibly pulled out by other demons…" Tom helped Li Yue plan ahead, "Regarding this point, I will ask Pigg to improve the daily meals, or create new Chaos Cuisine to strengthen their control over their minds and reduce the possibility of them being hypnotized."

【At least three known materials have the effect of resisting mental attacks…】

"Ah, I can do this! I can also conduct dream thinking training for everyone!" Li Yue hurriedly chatted with Tom privately, telling the scholar all the countermeasures against dream intrusion that he had seen in a certain movie in his previous life.

"Of course, this will also increase the cost…" Creating new Chaos Cuisine or purchasing magic potion materials all require money—the pressure is still on Li Yue.

The ultimate question is… is all this worth it?

Are the flies really Greed Flies, and can they find Oogey Boogey?

"This is an unproven but self-consistent hypothesis." Tom said back to what Li Yue cared about, "But we might as well continue thinking along this line."

"The inspiration it gives us is… the private dance address of the Dance of Growth is related to its owner, which also points to one of Oogey Boogey's lairs…"

"Then, if I can go back in time at the private dance of the Dance of Growth, can I find the origin of this dream?" Li Yue began to think of some evil ways.

If the dreams are connected, and the private dance takes place at the dreaming location, then if this dream also belongs to Oogey Boogey…

No matter where this dream takes place, as long as you use Steel Baby's "Retrospect", you can naturally see the beginning of the dream, and you can also shield the interference of the dream and find the specific location.

Anyway, Steel Baby's retrospect magic was originally aimed at Oogey Boogey, so wouldn't it be perfect to use it?

You can even avoid being noticed by Oogey Boogey.

"You also have this kind of magic?" Tom's eyes lit up.

How much lost knowledge can this reveal?

"It's only for Oogey Boogey." Li Yue shook his head helplessly—Steel Baby is basically dead, just hanging on by a thread. Li Yue hasn't even figured out how to retrospect, and it's still a bit difficult to change the previous demon king's magic spell.

There's not enough time in the short term.

"Okay…" The look of disappointment in Tom's eyes flashed past.

"Actually, there is a second method." Tom pointed to the flies busy on the merchant's corpse, "At least we can be sure that these are the flies in Oogey Boogey's dream, so if we can communicate with it, we can also extract some useful information."

Tom was not sure if Li Yue had this kind of magic.

Li Yue had already tried it, but the Demon Illustrated Handbook was useless.

However, since Tom mentioned it, Li Yue suddenly thought that there might be another way.

"Have you heard of a dream within a dream?"