Chapter 300

> "*Derkila-sama... will be leaving his seat for a while. He asks us to protect his throne.*"
> ― Lord Sullivan from a flashback.
>
>

**The 13th Seat** (13番目の席 *13 Ban-me no Seki*?) is the three hundredth chapter of Osamu Nishi's *Welcome to Demon School! Iruma-kun*.

## Summary

A flashback is shown several hundred years ago when the demons were in uproar. The reason is that the Demon King, Derkila, has been missing for 13 days. Someone says that this prank of his has gone on too long, and they ask Amduscias Poro for his thoughts. Amduscias, one of the 13 Crowns of that time, replies that he is dying of Derkila's deficiency. At that moment, Sullivan enters the room, surprising the other demons. Amduscias asks him where Derkila is. To this, Sullivan replies that Derkila will be leaving his seat for a while, and he asks them to protect his throne.

Back in the present, the other demons in the Deviculum are shocked at the suggestion of replacing the seat of Demon King Derkila. Amaymon angrily tells Baal that he is way out of line. He yells that nobody would agree to this stupid idea. Baal responds that leaving a free seat unused is even stupider, further invoking Amaymon. Suddenly, Zebubra yells that he agrees with this idea and also pressures Bachiko for the same. While Bachiko is at a loss for words, Baal says that he intends to give the 13th seat to Bachiko, which shocks Iruma and Bachiko herself. Baal explains that she is an obvious choice if someone thinks about it, and he bets that the Three Greats also wanted to appoint her. While Zebubra is still mad that he wasn't chosen, Lord Belial says that regardless of the outcome, this is not a decision they can make immediately. He further states that they have important guests, and discussing it further will only cause more confusion.

When Belial suggests discussing it at the next Thirteen's Dinner, Baal angrily unleashes his lighting magic. Baal loudly states that this is why the decision should be made exactly at this moment, where all the high-ranking demons, the 13 Crowns, and everyone who shapes the future of the Netherworld are present. He asks them why they can't let him go if they don't realize that they are all reduced to ash under the light of Derkila's glory. Whether it is the Netherworld's future or the Trickster Plan, they always say they want something new and yet cling to the memory of an absent, ancient king. He then tells Lord Sullivan that Derkila is *gone* and he isn't coming back. Sullivan tries to say something about Derkila, but Baal interrupts him by asking if Derkila said that he would *return* or if Sullivan has just been *wishing* for that to happen.

All the others who were present at the scene were unable to fully grasp the situation. But nobody said a single word because they were overwhelmed by indescribable excitement and uncertainty due to the historical moment they were witnessing. It was an exceptional situation, so they all mistook the ground shaking for the beating of their hearts. Suddenly, the hall's roof collapses, and a huge Behemolt breaks through it. Later, it was called the 13th of the Betrayal, the day when the Netherworld shook.

## Characters by Appearance

* Amduscias Poro *(flashback)*
* Lord Sullivan
* Levi
* Belial
* Baal
* Amaymon
* Zebubra
* Barbatos Bachiko
* Iruma Suzuki
* Shura
* Asmodeus Amaryllis
* Astaroh
* Demon King Derkila *(mentioned and pictured)*
* Behemolt

## Chapter Notes

* Earlier, Amduscias Poro was a member of the Thirteen Crowns.
	+ He was called the "Divine Sound Demon."
* Amaymon confronts Baal for his suggestion to replace the Thirteenth Seat.
* Zebubra is still mad that he didn't get a place in the Thirteen Crowns.
* Baal suggests the Thirteenth Seat to Bachiko.

## External Links

* Official Teaser (Japanese) - Twitter
* Official Release (Japanese) - Twitter

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