Alvin was completely stunned.
As a creature born from myth, a white dragon naturally possessed frighteningly sharp senses.
Yet just now… he hadn't noticed Morgan's presence at all.
Even if this was Lily's room and protected by a magical barrier, with his perception, there was no way he shouldn't have sensed Morgan slipping inside.
"Are you that surprised?"
Sensing exactly what he was thinking, Morgan lightly licked her lips.
A faint, damp shimmer of seduction flashed in her eyes as her fingers casually traced across his chest.
"Alvin, during the last Holy Grail War… did you know the true identity of Assassin?"
The question came out of nowhere.
Alvin blinked and shook his head.
"...No."
"Is that because you simply didn't pay attention to that Assassin… or because he hid himself too well?"
Morgan asked again.
"Probably a bit of both… Why are you suddenly bringing this up?"
"This potion that conceals one's aura— I modeled it after that Assassin. The stronger the user is, the higher the level of concealment it grants."
As she spoke, Morgan pulled out a small vial of gray liquid.
Tiny bubbles writhed across its surface and Alvin instantly sensed a very familiar essence within it.
"This is… white dragon genetic material?"
Back when Alvin had 'died,' Morgan had gathered and researched countless samples of the white dragon in order to revive him.
Within the entire realm of Britain, no one understood the white dragon better than she did.
Naturally, she also had some understanding of his unique Authority— Night Watcher EX.
This potion was essentially a weakened version of that skill… but even so, it was more than enough to erase one's presence.
Alvin fell silent for a moment and sighed. "Why are you even researching something like this?"
Morgan's eyes curved with a soft smile."I heard the border has been restless lately. Even Lancelot was injured, wasn't he? Artoria must be considering sending someone to investigate."
"You're planning to go to the border, aren't you?"
She didn't phrase it as a guess.
Alvin's eyes widened.
"How did you know…?"
Morgan responded calmly.
"Anyone could guess. My sister has always been indecisive. Someone as skilled as Lancelot was hurt, and now she's hesitating over who to send. Her dilemma is obvious."
She paused, then slipped her arms around Alvin's neck, her smile turning playful. "And with your personality… of course you'd volunteer."
"...So that's why you came to find me?"
"No. At first I only wanted to test the potion. But once I saw Lily stepping into the bath… I suddenly felt like doing something fun."
Morgan said that with an almost casual tone.
Alvin: "…"
So in the end… this royal elder sister was simply addicted to cuckolding, huh?
Although the two sisters had "reconciled," reconciliation didn't mean they were truly on good terms.
Their relationship had always been delicate.
If Artoria were to walk out of the bath in a moment… and see her elder sister in bed with her own husband…
Thump, thump—
Just imagining the possibility made Alvin's heartbeat speed up on its own.
At that moment, a cool, soft hand rested lightly on his chest.
"Alvin," Morgan said gently, "you actually don't need to go to the border yourself. I can have little Mo take the concealment potion and handle the investigation."
"The number of transmigrators keeps growing. It wouldn't be strange if a powerful enemy is already hiding inside the capital… If you stay in Britain, they'll be far more cautious."
Alvin didn't answer, instead, fell deep into thought.
To be honest, had considered the same thing before.
Since Britain had already produced someone like Sessyoin… could there be a second, or even a third Beast?
If an enemy realized he had left the capital, would they make a move in the shadows?
"With you here… it should be fine, right?"
Alvin suddenly asked.
No matter what, Morgan was someone blessed with the Authority of the "Isle Sovereign." With her around, even if another threat lurked within the capital, Britain shouldn't be in danger…
"What happens to Britain has never been my concern."
Morgan's tone remained faint, almost cold. "Yes, I've reconciled with Lily. But that doesn't mean I've reconciled with this country."
In Morgan's eyes, Artoria had been "passively" made the King of Britain from beginning to end.
The true movers behind it were the previous king and Merlin.
Because of that, she had never intended to involve herself in Britain's future at all.
The only reason she bothered making that potion, and the only reason she suggested sending Mordred to the border…was simply because she didn't want Alvin leaving the palace.
Nothing more.
Alvin stayed silent for a moment.
"I'll think about it a bit more."
"But right now," he added as he sat up, staring seriously at the woman before him, "Aren't you forgetting something much more important?"
Morgan tilted her head slightly, pretending confusion.
"What important thing?"
"Whether we're talking business or anything else… don't you feel like this is the wrong place to be doing it?"
Alvin's expression was extremely serious.
Morgan blinked once, then suddenly let out a soft laugh.
"You're worried Lily will catch us? Relax. Even without this concealment potion, I'm not afraid of her."
'You're not afraid, but I am…'
Alvin complained in his heart.
He'd just managed to make the sisters reconcile, if they start fighting again over this, the loss would be massive.
…And okay, fine—this probably didn't qualify as a "small thing" in the first place.
Morgan studied the boy with obvious amusement and soon smiled sweetly.
"Are you nervous?"
'How could I not be?
If you get caught, you'll just walk away without a care.
But what about me?'
Even though his heart was a mess, he managed to keep a calm face.
He gently took Morgan's hand and said softly, "Sister Morgan… I really don't want you and Lily to have another conflict. I'll come find you tomorrow, alright?"
Morgan was prideful, but her defenses were notoriously soft.
Alvin genuinely thought that after hearing this, she would obediently leave.
Instead, the seductive beauty only gave him a bright, teasing look.
"I refuse~"
…Okay. She really wasn't listening at all.
Before he could speak again, Morgan continued leisurely, "You don't need to be this tense. Lily already knows about our relationship. Even if something did happen, it's not a big deal, is it?"
Knowing is one thing...but what sane person sneaks into her sister's bedchamber to do this?
Thoughts flashed rapidly through Alvin's mind as he desperately considered how to handle this mess—when suddenly, he picked up the faint rustle of fabric against skin.
Before he could react, Morgan sat up and pushed him down onto the bed.
Her lashes lowered, her cold eyes tinted with a deep, delighted glow as she looked down at him.
The luxurious court dress she wore did nothing to hide her curves; from Alvin's angle, the overwhelming shape of her figure filled his vision.
Morgan leaned down and pressed her red lips against his, her full weight sinking onto him in an instant.
Alvin barely had time to enjoy the warmth of Britain's witch before his world went dark—
Morgan had wrapped her arms around his head and pulled him straight into her chest, the grip so tight that the intoxicating softness came with a very real sense of suffocation.
Doing this in Artoria's own bedchamber, while she was just in the bath…
Even if the sisters were extremely close, seeing this would send anyone's blood pressure straight through the roof.
At this moment, feeling the soft warmth in his arms and the weight pressing down on him, Alvin truly felt a kind of helpless despair.
Just then, a faint sound of footsteps came from the distance.
The sound of running water from the bathroom had already stopped… which meant Artoria had finished bathing and was on her way back.
Morgan noticed it as well and slowly released Alvin.
As the golden-haired Knight King's silhouette gradually approached the room, Alvin witnessed something that shocked him more than anything he had ever seen in his life.
In less than half a second, Morgan swallowed a Concealment Potion, and then, right before Alvin's eyes, a shadow-like afterimage shot across the room at a speed that seemed impossible.
The next moment, she locked onto the best hiding spot in the room, under the bed.
And in an instant, she vanished, leaving the boy, staring at the scene in utter disbelief.
Damn… was that the potion's effect, or was it her power as the "Lady of the Island"?
Even for Alvin, this was the first time he had ever seen someone move so fast that they left behind a literal afterimage… though using that power this way felt a little strange.
Just then, Artoria finally stepped into the room.
Seeing the boy sitting on the edge of the bed, she tilted her head slightly with a puzzled look and asked,
"Why are you sitting here spacing out?"
Alvin snapped back to reality, shook his head, and smiled. "It's nothing… I was just wondering why your bath took so long."
A faint smile appeared on Artoria's face. "Sorry to keep you waiting."
Alvin glanced at her with a surprised expression.
Seeing her looking completely normal, he finally let out a quiet sigh of relief.
"Shall we rest?"
Artoria gave a gentle "mm" in response.
A soft click sounded as the buttons near the collar of her white nightgown came undone.
But just as she reached to turn off the bedside lamp, she suddenly paused, as if remembering something important.
"What's wrong…?" Alvin asked instinctively.
"It's nothing… I just think there's something we need to deal with before we rest."
Artoria looked at him gently, and then her voice turned cold and emotionless as she said, "Don't you agree… sister?"