What does it mean that the Demon King was killed by a wheelchair?

"Holy crap! Aren't you going to say a single word?! If you're going to kill me, at least give me a reason!?"

House screamed in terror, but the terrifying heavily armored man in front of him seemed deaf. House didn't even have time to push Kiaran off his leg. In the blink of an eye, the man was right in front of him, without uttering a single word!

Flames suddenly erupted from the straight sword in his hand, and then he slashed down!

*Pfft!*

The horrific sound of flesh and blood being torn apart suddenly rang out!

"Huh...?" But when House opened his eyes again, he found himself completely unharmed.

"Hiss... hiss hiss!!"

A series of mournful cries and gasps came from behind. A semi-invisible giant cockroach had its head slashed open by the sword, and green blood gushed out, instantly boiling in the flames and bubbling.

The knight didn't forget to finish it off, turning around and delivering another magnificent upward slash, instantly cleaving the brownish-red giant insect in two with a clean cut without even a burr.

Then, to House's astonishment, the man slowly sheathed his straight sword, a low sound emanating from the gap in his helmet:

"Phew...you scared me! Are you alright? These rove cockroaches are dangerous; they like to ambush people when they relax. I almost fell victim to one before."

The man seemed rather outgoing; he rubbed his chin, making a metallic scraping sound.

"Did you two come here together? This girl is... ah... she must have smelled the poisonous powder emanating from these white umbrella mushrooms. This poison is quite repulsive, but luckily you two have run into me. I have a solution. Come with me."

House was still hesitant about whether to trust this seemingly kind-hearted stranger when the man simply took House's wheelchair and pushed him away, saying as he went:

"Oh, I haven't introduced myself yet. My name is Green, and what about you two?"

"My name is House, and the man on my lap is Chiaran. We're from the village of Elro in the woods... Brother, where are you from?"

"Me?" Green scratched his head and said in a playful tone, "Sorry, I forgot. Getting old makes you forget things."

A question mark appeared on House's face. How could he forget where it came from? You just don't want to tell me, right?

However, House didn't want to find out more. Since the other party didn't want to talk about it, he wouldn't ask any more questions.

"Then what are you doing in this cave, brother? Is it also to save the Mother Tree of Elves?"

Green shrugged the steel armor around his neck and shoulders. "The Mother Tree of the Elves? Ah... I know, you mean that red heart, right? Of course not. I have absolutely no interest in her. I did dislike her before and wanted to destroy her, but then I thought I'm not that cruel, so forget it."

House thought to himself, "What's wrong with his mother?"

The man in front of me spoke of destroying the Mother Tree of Elves with the same nonchalant and carefree tone a child would use when deciding to step on an ant, and it didn't seem like he was faking it at all.

"Never mind...this guy seems pretty oblivious, I'd better not ask any more questions," House thought to himself.

Green then pushed him through the dark tunnel. Without the light of the seven-colored stone, House couldn't determine his location or how far he had gone.

He felt the wheelchair tilting to the left and then to the right, as if his brain was being shaken to its core.

Green was frequently turning and veering, and it's unclear how he managed to navigate in complete darkness.

After House's backside was completely numb from all the bouncing, Green finally brought the two of them to a stop in front of a "room" covered in glowing moss.

This "room" is different from the other "rooms" in the cave that were gnawed and dug out by insects.

This is a room that can truly be lived in.

Green transformed the place using whatever materials he had on hand. He wove a soft bed from a lot of moss and branches, peeled off the shell of a huge rhinoceros beetle, cleaned it, and used it as a worktable. The long shell of a centipede was laid on the ground as a carpet.

The various bowls and cups on the worktable are all made of different kinds of insect shells, and there are also brushes made of spider hair, ropes made of cockroach antennae, and so on.

In the corner of the room, there was a clear pool of water from which drinking groundwater constantly gushed forth.

The lighting was provided by a campfire in the center with a spiral sword stuck in the middle. The fire crackled as it burned the firewood and the oil from the insect carcasses, and the warm firelight greatly enhanced the coziness of the entire room.

Judging from the various signs, this person seems to have lived here for quite some time.

Green walked to his beetle workbench, pulled out a bunch of strange and unusual things from somewhere and started fiddling with them. He said to House:

"Put your friend on the bed first, I'll be right there, no rush."

Seeing that the other party had said so, House had no reason to refuse. He took the greatsword off Kiaran's back and carried him to the soft mossy bed.

House even touched it; it was really soft.

Of course, I was touching the bed; please don't get the wrong idea.

Then Green sauntered over, carrying a small bottle filled with some kind of orange liquid that looked a bit like orange juice with pulp...?

"Give her this to drink, she'll feel better in a little while."

House took the warm, small bottle, squinted and looked down through the opening. It was odorless... but it didn't seem threatening either.

"What...is this?" House asked cautiously, just to prevent Kiaran from drinking something indiscriminately and getting poisoned.

Green shrugged: "Elemental Bottle."

House looked troubled. Although he didn't understand... well, whatever. He helped Kiaran up and then pulled the other man's chin down and poured the potion into his mouth.

Green wasn't lying to him; the moment the medicine went down Kiarlan's throat, her sleep-talking symptoms disappeared.

"She's alright now, she should wake up in a bit," Green yawned, then plopped down on the floor, resting his chin on his hand and asking with interest:

"Hmm...so, young man in the wheelchair, did you and your girlfriend risk coming here to find that heart?"

House grinned upon hearing this: "She's not my girlfriend... but you're right about the second half, we do have important business to attend to right now," he pointed to the bomb hanging around his neck, "We're going to blow the mother hive in this cave to smithereens."

Green didn't respond to these words. He slowly got up and walked to a box of insect shells in the room, rummaging through it.

"Oh...that's good."

"That's good...?"

House stared at the retreating figure of the man before him with a complex expression. While he was grateful that the man had saved him and Chiarand, this whole situation was just too strange...

A lone human lives a solitary life in this dangerous cave infested with insects, isolated from the world.

House looked around the room. Although there was water, he couldn't see any trace of food. What did he eat? Could he have been eating bugs?

"Um..." House asked in a low voice, "May I ask how long you've been living in this cave, Brother Green?"

Green was still rummaging through drawers: "That's been around for years."

The man scratched his head thoughtfully. "It would take...200 years?"

As he spoke, Green finally pulled out what he wanted from the box: a snow-white human bone arm.

One end of the bony arm was wrapped in thick strips of cloth, which seemed to be covered in grease. House was so frightened when he suddenly pulled out such a thing that he trembled.

"Two hundred years...?"

House stared at the thick iron helmet, realizing that the man before him might not be human at all: "Brother Green... that might be a bit rude, but I didn't mean anything by it... are you human?"

Upon hearing this, Green wasn't angry; he calmly replied:

"Yeah, why would I save you two if you're not human?" But then he looked up at the sky, thoughtfully tapping his chin. "Hmm... I should be human, right? Hmm... Yes, yes, yes, I should be human."

"Huh? Right...right...is that right?"

"Oh well... okay, okay, I guess I'm probably not human, but I used to be a real human, and quite famous, too!"

You were once a human...? Did you, like Xu Haolong from FZ City, also transform from a human into a stray dog?

"So, Brother House, are you... a skeleton? Or an undead? Or something like that?"

Hearing the names the other person used, Green scoffed. He gave a thumbs-up, tilted his nose in the air, and said smugly:

"What kind of nonsense are you spouting... I'm not one of those roadside monsters!"

Bang bang bang.

As he spoke, he patted his chest and said:

"Listen up, I am the infamous—Undead!"