Confirmed: My Brother-in-Law Is My Enemy!

More than ten years had passed since the war between East and West ended. Throughout that time, the two countries had maintained a false peace.

But however fragile that peace might be, they could never allow it to shatter.

The Westalis Intelligence Agency had been established to thwart Ostania's warmongers. That was why Operation Strix existed, and why they had sent their top agent, Twilight, to establish the Forger family.

Then let me find out, Yuri Briar-are you a threat to my family's existence?

"Nice to meet you. I'm Loid Forger."

"Hello. I'm her younger brother, Yuri Briar."

Let me get a good look at you and see whether you're worthy of being my sister's husband... no, he definitely isn't!

The two men shook hands, false smiles plastered across their faces.

"Please, come in. You seem to be injured. Let me take your bags," Twilight offered warmly.

Still smiling, Yuri shook his head. "No, thank you. They aren't very heavy."

"..." Twilight's smile stiffened. This fellow clearly had his guard up around him.

He quickly recovered. "I see. Are you all right with home cooking? It'll be ready soon."

"Thank you for having me." Yuri handed the flowers to Yor. He didn't want to eat here at all. How did the man who had stolen his sister dare share a meal with him?

Yor took the flowers Yuri handed her and put them in a vase. Then the two of them sat on the sofa, smiling at each other.

Silence settled over them for a moment, each occupied with their own private concerns...

I need to keep up the act of an ordinary civil servant in front of my sister... I absolutely can't let her find out I'm with the secret police!

I have to act like a proper wife in front of Yuri. Even if someone tore my mouth apart, I couldn't tell him I'm an assassin now!

The awkward tension between them persisted.

Yor spoke first. "Thank you, Yuri. The flowers are beautiful!"

"Mm, you're welcome." Yuri's expression darkened. "I still haven't accepted this marriage..."

Yuri grew agitated. "Sis, how could you get married so rashly?! And why did you hide it from me, your own brother, for a whole year?! What's going on?"

"Unless you give me a good reason, I won't accept it!!"

Twilight stole glances at them as he cooked. Miss Yor had discussed this question with him when she received the message at noon. She would handle it. All he needed to do was trust her.

It's only natural for him to ask. They're siblings who grew up together, after all... I'm counting on you, Miss Yor!

Yuri pressed her further. "So what happened? Why didn't you tell me, Sis?"

Yor answered with a perfectly straight face. "B-because I forgot!"

Clatter-

Twilight dropped the spatula he was cooking with.

Only one thought filled his head: Would anyone actually believe that excuse? Surely no one could be that gullible!!

"Ah, well, uh..." Yuri had never expected that explanation. "But didn't you tell me a little while ago that you had a date for the party?"

"Why didn't you explain it to me then?!"

"Well..." Yor gave a couple of little coughs. "Because I forgot whether I'd already told you I was married..."

Crash, crash, crash-

Plates shattered all over the floor.

"..." Yuri fell silent for a moment, then smiled in sudden understanding. "Oh, so that's what happened!"

Yuri Briar had a little-known trait: whenever he saw his sister, his intelligence dropped by 100%, and he believed her unconditionally!

In short, Yuri had no sense of reason when it came to his sister.

He actually believed her.

Twilight found it unbelievable. He would never be fooled by an excuse like that. He was a top agent, after all.

"Oh, Sis, honestly. How could you forget something like that?"

"Sorry, Yuri. I've been so busy."

The siblings kept chatting until Twilight had set all the food on the table.

The moment Yuri saw Twilight, his mood plummeted, and he bombarded the couple with questions.

How did you meet? Where did you eat? What did you have? How many times did you go?

Yuri's barrage of questions left them both flustered. Twilight sensed something was off, but chalked it up to a younger brother's concern for his sister.

He hurriedly changed the subject. "By the way, I hear you're an accomplished diplomat, Mr. Yuri."

At the mention of her brother's profession, Yor immediately perked up. As his older sister, she was deeply moved by how well he had done for himself.

"Oh, right. Mr. Dominic told me you went to Hugalia."

Yuri began to answer, reciting the story he had prepared well in advance. "That's right. Hugania is a beautiful place..."

Twilight instantly grew alert. He was all too familiar with that story. Still, he couldn't rule out coincidence. He needed to test him.

So he asked about several establishments there, keeping the expected answers in mind.

Every answer matched-

Now he could be certain... Yuri Briar was a member of Ostania's secret intelligence organization.

I've been on guard ever since I heard he was a diplomat. So-called diplomats are much like spies...

And after that day at the aquarium, I asked Franky to look into him, but he could only find records of his work from a year ago...

That's probably when he joined the intelligence agency.

Twilight had seen through Yuri's cover, but he had no intention of exposing him.

He knew the other man was a spy, but the other man didn't know he was one too.

That was the advantage of having information the other side lacked. As long as he could get through this visit without being discovered, he could use Yuri as a source of intelligence.

Twilight glanced again at the siblings chatting animatedly beside him.

It looks like he hasn't told Miss Yor, either. He might be surprisingly easy to keep under control...

The spy Twilight had uncovered Yuri Briar's identity!!!