Interlude: The Return of a Former Doom Flag, or Perhaps...

Late at night, when everyone was fast asleep.

Inside her room in the royal palace, Sierra Ringveid sat with her elbows on the table.

"It’s finally reaching the climax, isn't it?"

Flickering through her mind was the scene from the banquet. Alvart exposing his pathetic side, and Clarice suffering the shame of violation because of him.

Recalling their faces, Sierra whispered to herself.

"Though whether that was actually the truth is a bit suspicious."

Those possessed by demons—the 《Monster Possession》—invariably possessed unique abilities. Therefore, there was a high possibility that the disaster at the banquet was nothing more than an illusion shown by Alvart.

However... to Sierra, that was actually for the best.

Considering what she was about to do, the situation where Clarice had found a temporary salvation at Alvart’s hands was actually very convenient.

"Either way, Clarice loves him. And the deeper that love is... fufu, the more spectacular her breakdown will be when she loses him~."

What kind of face would Clarice make when that moment arrived? Just thinking about it sent an unbearable heat through Sierra’s loins.

"Mmm...♥ This heat... I have to do something about it...♥"

She spoke to the empty air of the room.

"You’re there, aren't you? Show yourself."

Immediately after her voice rang out, an old man materialized in the corner of the room. It was none other than the old butler who had been supporting Clarice—Demitru Roadman.

"Tonight, you can stay as you are...♥"

"......As you wish, Lady Sierra."

Accepting his master’s carnal desires was nothing new. In fact, she had done it so many times that she was utterly indifferent to the act.

"First... I’ll have you serve me with your tongue♥."

In the dim room lit by a small lamp, the wet sounds of someone licking echoed for a while.

"Ngh...♥ Gh...♥ Fufu, I knew it was the right choice to have you in that form...♥"

She pinned Demitru down and straddled him, indulging her lust to her heart’s content. To Sierra, this act felt as though she were stealing the old butler away from her sister.

"Haa...♥ Haa...♥ Truthfully, I was planning to kill the real Demitru in front of Clarice...♥ But maybe this isn't so bad either...♥"

Since she had already made her decision, she had no intention of reversing it. In that moment, Sierra felt a brief surge of satisfaction.

"Phew...... well, that was decent enough for tonight~."

Having gone through the tryst, she was now in a state where she could at least get some sleep. And yet, the place she had reached tonight was still far from the "ultimate."

"This feeling of being fulfilled yet having gained nothing. Ugh, seriously──"

It’s disgusting. Disgusting. Disgusting.

From the moment she was born until now, Sierra Ringveid had only one goal. An orgasm so tremendous it would clear away this discomfort. A sense of satisfaction that would push her spirit into the ultimate realm.

She committed every atrocity imaginable for that sake alone. Her treatment of Clarice was merely a part of it... and the person currently exposing their naked body before her was just another pitiful victim caught in her clutches.

"Now that we’re done, I don't want to see an old man’s naked body. Get back to normal, Cecil."

As soon as Sierra spoke, the old butler’s form shifted into that of a beautiful girl.

Cecil Imitation. Standing at attention, her posture waiting for her master’s words gave the impression of a loyal servant... or rather, a puppet.

In fact, that’s exactly what she was. Cecil could never, under any circumstances, defy Sierra.

And that was why...

"Dispose of the imprisoned Demitru at an appropriate time. I was originally going to torture him in front of Clarice before killing him, like I said earlier... but I just thought of a much more delicious scenario. He’s of no value to me anymore."

Coolly, without a single shred of guilt, Sierra thrust a cruel command upon her pawn.

"Bring me Alvart Zesphiria’s head. As soon as possible."

"...You want me to assassinate him?"

"Yes. But don't take it as a metaphor, okay? I want you to actually cut off his head and bring it to me."

"...Is it to show to Lady Clarice?"

"Nfufufufu. You understand perfectly. You’ll transform into Alvart and consummate your bond with Clarice... and after you’ve spent a passionate night together, I’ll burst in with his real head. Then, I’ll reveal everything to my dear little sister. I’ll tell her that her precious Night King is no longer of this world."

Sierra had always loved Clarice. She had a premonition that Clarice would be the one to satisfy her. That was why she was going through all these steps──to reach the moment where she would completely destroy Clarice.

"I’ll leave the method for Alvart up to you. But like I said, make it quick."

"......Understood, Lady Sierra."

The words of total affirmation left her mouth. However, Sierra understood perfectly that the girl’s true intentions were quite different.

At the very least, Cecil didn't think poorly of Alvart. It wouldn't be strange if she held feelings of friendship—or perhaps even more—for him. The agony Cecil would feel having to brutally murder such a person was like nectar to Sierra, but...

(I have a really bad feeling about this.)

(Whenever I let my guard down at a time like this, I always end up getting tripped up.)

(Well, it’s precisely because I understand that...)

(...That I always carry my trump card with me.)

Unconsciously, Sierra gripped the necklace around her neck.

(It involves considerable danger... but with this...)

Even if the impossible happened and Cecil rebelled, she would be able to respond. Reading that certainty in her master...

Cecil Imitation spun words within her heart.

(This woman is a genius, but...)

(Alvart-kun’s abilities far surpass her.)

(The second ability... the one that prevented Lady Clarice’s violation and deceived everyone.)

(As long as he has that, he is invincible. No matter what schemes Sierra plots, she won't even reach his feet.)