Muzan: My daughter can't be that weak!

"Oh dear, let's not talk about this anymore!" Seeing the situation was getting out of hand, Yukina grabbed Muzan's hand and shook it from side to side. "Daddy, let's go out and set off fireworks together! Uncle Kurokawa bought so many—"

Seeing that Muzan didn't refuse and shook her off, she immediately laughed and pulled him outside.

A thin layer of snow had been laid in the yard sometime during the day, and it crunched underfoot.

A few sporadic firecrackers occasionally popped from the distant streets, but soon fell silent again.

The night sky was hazy and the stars were nowhere to be seen.

The pile of fireworks that Kurokawa bought was neatly stacked at the door, in several cardboard boxes of various sizes.

Yukina squatted down and rummaged around for a while, then picked out two small handheld fireworks and held them up in front of Muzan.

"Dad, do you want this one or this one?"

Muzan glanced at the two thin paper sticks, reached out and pressed his hand against her forehead, pushing her back.

"No, not at all." His voice was flat. "Stay away from me. If you get it on me, you can forget about ever touching this stuff again."

Yukina was pushed back a little, but she wasn't annoyed. She chuckled and touched her forehead, "Ouch, okay—"

She lit two fireworks, sparks hissing as they emerged from the tops of the paper sticks, then ran with them in her arms, waving them as she went, the fireworks drawing arcs of light in the air.

"amber--"

She ran past the big dog, deliberately slowing her pace, and moved the firework closer to its rear end, saying, "I'm going to burn your butt!"

Amber, who was leisurely squatting in the snow grooming herself, suddenly sprang up upon hearing this, and with a powerful leap, she darted away.

"Woo—!" It turned its head, its bright black eyes filled with shock.

"Amber, run! I'm catching up with you—"

"Woof!"

I have four legs!

Amber, regaining her senses, ran slowly, glancing back as she went.

Yukina chased after her, the fireworks in her hand leaving streaks of light. She ran a few steps, then suddenly accelerated, her figure flashing, and she instantly appeared to Amber's left.

"Hehe, I'm on your left."

Amber, who was not in a hurry at first, suddenly turned her head, her dog eyes wide open.

"Woof woof woof!"

Why is Master still using Blood Demon Magic to cheat?!

This is not fair!

Xue Nai laughed so hard she bent over, and the firework in her hand almost poked into the snow.

Standing at the door, Muzan watched the dog and the demon running around energetically, and without changing his expression, he uttered a few words: "Stupid dog, childish demon."

He remembered the new Western instruments that had arrived in his room, and turned to go upstairs when he suddenly heard a rapid bark from behind: "Woof woof woof!"

Without turning around, he could already hear the inner voice of the dog, just as stupid as its owner: What's going on? Why am I stuck?!

Yukina, who was over there, naturally heard those pitiful barks and thought that Amber was trying to coax her.

As a result, when she looked back, she saw that the big dog had been running around with her everywhere. In its panic, it plunged headfirst into the gap between the courtyard wall and the big tree. It was stuck there, kicking its four legs and sticking its butt out high, but it just couldn't get out.

"Oh my god, Amber!"

Xue Nai quickly ran over, circled the big tree carefully, and pushed the dog's butt, but it didn't budge.

She pushed it twice more, but it still didn't work.

She crouched down, tilted her head to look at the big dog, and said, "Take a deep breath and shrink your body."

Amber understood, took a deep breath, and her stomach deflated a little, but her body was still stuck tightly.

It tried again, but it didn't work.

The dog's head was buzzing with wicked thoughts—why not just break the tree down?

Before its thoughts could even take shape, that cold, icy voice exploded in its mind for the first time: "Stupid dog."

Amber's eyes widened suddenly, and her big head darted around.

The master's father!

It's the voice of that horrible two-legged beast! Where is it? Where is it?

"If you dare to break this tree, you'll be dead."

Amber froze completely, forgetting even to kick her legs.

Good heavens! How did the owner's father end up inside my head?!

It let out a pitiful whimper, its ears drooping, and cast a pleading look at Yukina.

Xue Nai was still figuring out how to get it out and didn't notice the amber's unusual appearance.

She looked left and right, then clapped her hands, stood up, put her hands on her hips, and sighed.

"Amber, shouldn't you lose some weight?"

"Woof woof~"

Master, master, the dog's brain is malfunctioning, your dad has run in.

"Amber, acting cute won't work. You really need to lose weight. Ask Nakime to feed you less; you've gotten so much bigger these past few years!"

Yukina sighed jokingly and patted Amber's head.

The dog, whose CPU was already burnt out, felt like the sky was falling when it heard this.

It was so angry that it arched its back with all its might and came out.

"Woof woof woof~"

the next day.

Yukina has been in Tokyo for several days and is preparing to return to Infinity Castle.

After all, that was her real home, and her family lived there.

Before leaving, she checked the gifts she had brought for everyone in her room one last time, making sure they were all there before tying the bag shut.

"Dad, are you really not going back?"

She leaned over the door of the leftmost room on the second floor, peeking half her head in and looking at Muzan inside, who was fiddling with various instruments and medicines.

On the table were several glass tubes, bottles and jars, and some parts she had never seen before, all scattered haphazardly.

My dad has recently become obsessed with these things. He stays in his room all day, tinkering with something, but it looks really impressive.

"Okay, Daddy, be careful." Xue Nai thought for a moment, then added, "I heard this might explode—"

Her voice was soft, tinged with worry.

Although Dad has a strong ability to recover, he still feels pain when he gets injured.

Muzan finally raised his head and glanced at her. His crimson eyes were filled with "What nonsense are you talking about?"

How could he, with his intelligence, possibly mishandle something so simple and cause it to explode...?

He thought dismissively to himself as he casually flipped through the book in his hands.

Yukina pulled her head back and turned to walk towards her room.

"Bang—"

She had just reached her room door when she suddenly heard a muffled thud behind her.

She paused for a moment, then turned around abruptly and ran back towards the door.

The door has been closed.

"What's that sound?" She knocked on the door. "Dad, are you alright?"

There was a moment of silence in the room, and the ghost inside did not answer immediately.

"What could be wrong? It's just fireworks outside. Don't bother me."

Xue Nai pulled her hand back from the door panel and stood there for a few seconds.

Setting off fireworks?

She stared at the closed door, but didn't expose it.

"Oh," she said, "Even though Daddy is very smart and capable, he still needs to be careful."