Theres no reply from any of the units Libest-sama.

In the demon kings castle, Libests subordinates are starting to panic over the loss of communications through <Liikus>

If we cant communicate with <Liikus> what are we supposed to do? Have they already been beaten in battle? Should we attack with the main unit instead of the scouts?

No. This is very strange. No way were they all beaten without at least one of them using <Liikus> to inform us. We should consider that they have set up traps outside. Carelessly moving about out there is probably what they want. (Libest)

Libest seems to have decided that staying put is the best course of action since they cant see the enemies hand.

Its vexing but let them siege us. Its not too late for them to underestimate us and give us the chance to strike back. (Libest)

Theres also the terrain effect of being in the demon king castle. If Libest [King] is in the castle then his power is strengthened. The true value of <Guys> comes from siege warfare.

Save your magic and the moment they show up really give them something to look at. (Libest)

Understood!

They still dont seem to have realised whats going on while they stay in the castle and store up magic power.

After a short while.

Hmph. Finally here? Lets finish it. (Laos)

Laos emerges from the east and confirms the castle.

Youre too hasty Laos. Its boring if you dont play around a little. (Heine)

Heine appears from the west.

Both of you are too careless. We still dont know what will appear from the castle. Please proceed more cautiously. (Ledoriano)

Ledoriano appears from the north.

I see them. North, east and west. Its three heroes [Braves]!

Libests subordinates raise their voices.

Did they split up instead of acting as one group? I dont suppose it matters now. Lets go! Show those guys the power of the demon king academy! (Libest)

Roger that! Preparing Absolute Water Annihilation Cannon <Rio Eias>!

<Rio Eias> preparing! Magic formation begin!

A huge magic formation appears on the castle and turns into a turret above one of the gates.

Start supplying magic power!!

The formation activates as is receives magic and light gathers in the turret.

Ready to fire!!

Magic sights are aimed at Heine, Laos and Ledoriano.

Here we go. <Rio Eias> fire!! (Libest)

At that moment the lake turns white and is wrapped in holy light.

With Heine, Laos and Ledoraiano as the tip, a triangle formed of magic lines appears. From the centre, a huge magic formation appears and covers the demon king castle in light.

Libest-sama. Magic power and the power supply itself is decreasing rapidly. We cant maintain the formation!

The <Rio Eias> formation deployed on the castle disappears and even the whirlpools created around the castle have disappeared.

.Wha. We cant draw any magic out. At this rate, the demon king castle will.!!

As soon as the [Guardian] speaks a sound rings out and the castle breaks in half and gets swept away in the water.

UAAAAAAAAAAAAH..!!

The outer walls, floors and ceilings come apart and everyone inside was dragged out.

Due to the castle collapse, the water becomes stormy.

Libest casts Flight <Fres> and flew through the water somehow managing to regain control and begins re-establishing order.

Everyone calm down and prepare for the enemies attack. Ill help you! (Libest)

Ohh? Can you do that? (Heine)

Heine appears behind Libest.

Is onii-san a demon king [king] who will become a demon emperor in the future? (Heine)

What about it? (Libest)

*Fufu* Heine laughs.

Look at that. Do you understand? (Heine)

Libest turns to look at where Heine was pointing and a flash of light appears.

The rubble from the collapsed castle is scattered in the water along with the other students and from the lake floor countless flashes of holy fire are firing out.

Its no good! Anti-magic cant be used!GUAAAAAAA!!

KYAAAAAAAAAA!!

The lake had become complete pandemonium.

To the listening Libest, Underwater Activity <Coco> is barely working as their voices augmented by magic are becoming feeble.

Ha! Youre weak! If this happens you Mazoku are weak!!

Laos fires off multiple Holy Flames <Cipher> burning one student after another.

Both anti-magic and recovery magic were sealed by the barrier scattering the magic for them into the water and making them useless.

Ahahahaha, how unsightly. I have to laugh if such a pitiful person is a future demon emperor. What is the demon king academy teaching you? How to let your comrades die without helping them? (Heine)

Libests eyes sharpen at Heines words. He tries to pull his demon sword out but he cant due to his low magic power.

Why is your magic weakening? Would you like me to tell you? (Heine)

Heine was totally playing with Libest now.

The holy water that mixes with this lake creates a special barrier. You can use it as a source of magic power if you can draw it out but if not it will hinder your use of magic power. I say that but you cant use it at all so it would be hard for you to do. (Heine)

Heine deliberately exposes the holy water magic tool to Libest.

So it was such a thing Even so, you should have remained quiet to the end!! (Libest)

Libest accurately analysed the flow of Heines magic power and uses the holy water as a magic tool in the same way.

And that was the trap.

Ah. (Libest)

The power of the holy water penetrates directly into Libests origin. Holy water benefits humans but is poisonous to mazoku. The holy power tears his body inside to shreds.

Libest bleeds from his whole body.

Ahahahaha! Failure failure! The students of the demon king academy cant do such a difficult thing. (Heine)

Heine mocks Libest and raises his right hand.

Come my holy sword. Great sacred ground sword Zeele.

Light gathers in his palm and instantly materialises.

A holy sword emitting a deep green glow appears in Heines hand.