This method is simple and direct.

...

At this point, Kōyū had successfully infiltrated the Kudo residence.

The room was dark and very quiet.

He was not misled by appearances.

After getting used to the dark environment, he started his inspection from the first floor.

After spending a few minutes examining the evidence, Guangyou made a judgment:

Everything is normal on the first floor.

To save time, he didn't check carefully.

That is, to see if anyone was on the first floor.

He then went straight up to the second floor.

He would stop and listen carefully for two seconds after taking each step.

Just as he reached a room, Guangyou vaguely heard faint footsteps coming from inside.

He gently pressed his ear against the door, slowed his breathing, and listened carefully to the sounds coming from inside the room.

After a series of light footsteps, a familiar female voice rang out:

"Shin-chan really did find me."

"He'll probably come in to see me later, right?"

"Hmph~"

I want to prepare a surprise for him!

Upon hearing that familiar voice, those familiar words, and the way she addressed Conan, Kōyū immediately recognized the woman's identity.

He thought to himself, not knowing whether to laugh or cry:

"It turns out that Yukiko lived in the Kudo residence."

"Really..."

While he was thinking about these things, Yukiko Kudo had already arrived at the door and opened it.

Upon seeing the dark figure crouching in front of the door, Yukiko Kudo instinctively wanted to shout out.

Fortunately, Kwang-yu reacted quickly and spoke first:

"Yukiko-neechan, it's me, Kōyū."

Upon hearing that it was Kōyū, Yūkiko Kudo swallowed back her scream.

She placed her hand on her chest, frowned, and said:

"Kuangyou, your appearance was too sudden."

There wasn't a sound at all.

"I almost thought someone had actually broken into my house."

Due to the positioning of Kouyu and Conan, as well as the range of Kudo Yukiko's field of vision.

As a result, Yukiko Kudo only saw Conan and not Kousuke.

In addition, Kwang-yu's silent actions were also one of the reasons.

Guangyou was somewhat helpless about this, and he said awkwardly:

"I'm so sorry."

"I didn't know it was you, Yukiko-neechan, otherwise this wouldn't have happened."

"I thought those guys were hiding here keeping watch."

"I'm sorry I startled you."

After taking a few breaths to calm herself down, Yukiko Kudo waved her hand:

"fine."

"I didn't tell you in advance, so it's normal for you to think this way."

"Okay, let's not talk about this now."

After recovering from the shock, Yukiko Kudo prepared to continue her plan.

She said to Guangyou:

Let's prepare a surprise for Shin-chan together!

"Hmm." Guangyou nodded in agreement with a meaningful smile on his face.

...