In this crossover anime, I fight against the supernatural in my everyday world.

The deafening gunshots were followed by screams and cries of panic from the passengers as they fled.

They dared not not run.

Because the countdown behind us is still going on.

"twenty three..."

Watching these people disappear from his sight in the distance, Ye Xing dispersed the pistol formed by the evil spirit's power and chuckled to himself.

"solve."

He didn't have the time to explain the existence of the Otherworld and evil spirits to these people.

They also lack the energy to spare the attention to protect these helpless and vulnerable people when the exorcism begins.

As a cautious and professional exorcist, Nightstar knew one thing well.

Often, it's not the villain who kills the hero.

Rather, it is a naive to the point of being foolish.

Judging from the way he and Rio Futaba walked, if they ran another kilometer or so, they would be out of the "gate's" influence.

Use the most efficient and convenient methods to minimize collateral damage.

This is the professional approach.

only...

"I don't see Kyoka Kawasaki or the others..."

Ye Xing didn't linger in the underground passage; he turned around and boarded the tram.

When they reached the first passenger car, they saw Kawasaki Saki supporting Kitagawa Kaimu, Kawasaki Kyoka standing behind them, as well as Yagami Soichiro, Futaba Rio, and Tamamo-no-Mae.

"Who are you...!?"

When Kawasaki Saki saw the mysterious person wearing a pure black mask and dressed in all black, looking exactly like the one in the urban legend, appear before her, her mouth dropped open in shock.

"Humph."

Kawasaki Kyoka's little face was full of smug satisfaction.

"See, sister? I told you, the hero who saves everyone is real."

Kawasaki Saki stared blankly at the "mask" standing there, completely dumbfounded.

turn out to be...

The other party wasn't just an urban legend, but a real person?

"You've finally arrived."

With a mere wave of her hand, Tamamo-no-Mae unleashed a sudden, inexplicable force that pinned Yagami Souichirou, Kitagawa Kaimu, and the Kawasaki sisters to their seats on the train.

Immediately afterwards, she moved gracefully to Ye Xing's side, staring at his eyes beneath the mask with a half-smile, a slight smile playing on her lips.

"This situation is quite troublesome."

Tamamo-no-Mae turned around, pointed towards the back of the tram, and spoke softly.

"I can sense that those shadows from before were just a small part of someone else."

"The real monster still lurks in the darkness."

Ye Xing nodded slightly, looked at Tamamo-no-Mae standing in front of him, and chuckled.

"It's really not like you that you would willingly put yourself in such a dangerous situation."

"Those words really hurt me."

Tamamo-no-Mae covered her lips and chuckled softly, every movement exuding a natural and captivating charm.

"The extent to which the 'door' within this guy's body is open has transformed this underground passage, several kilometers long, into an area where the inner world and the real world are integrated, which means..."

Before Tamamo-no-Mae could finish speaking, Rio Futaba spoke up calmly.

"So, this evil spirit is not only a threat to the real world, but also a terrifying presence for you living in the Otherworld, right?"

Tamamo-no-Mae smiled and nodded.

"You're still so smart."

Listening to the conversation between the two humans and the demon, Kitagawa Umi and Kawasaki Saki were completely dumbfounded.

What is this all about?

The Other World?

Evil spirit?

Is this...cosplay?

But those slender, ghostly figures... were clearly strange beings they had never seen before.

Could it be that in this world...

Really ghost?

Kyoka Kawasaki, however, didn't think that much about it.

Her big, watery eyes were fixed on Ye Xing, and her eyes were practically sparkling with tiny stars.

Big brother, you're still as handsome as ever.

"Is this incident related to you again...?"

Souichirou Yagami rubbed his forehead and sighed helplessly.

He finally discovered it.

The few blemishes in my career as a criminal investigator are almost all related to this "mask".

They're really being countered by their own element.

"Chief Yagami, you're not right about that."

Yohoshi sat directly opposite Yagami Souichirou, a smile in her eyes, and spoke.

"If it weren't for me and my companions intervening today..."

At this point, the smile in his eyes vanished instantly, and he spoke each word clearly.

"All the passengers on this tram..."

"They will all die."

Upon hearing this, Soichiro Yagami felt a heavy weight in his heart.

He knew that the other party was not exaggerating.

That slender, ghostly figure was able to kill several groups of search and rescue personnel sent by the tram station manager without making a sound.

Even the professional members of the Metropolitan Police Department disappeared in an instant without even having a chance to fire a shot or shout.

This is simply a monster that humans cannot handle.

"So what should we do now?"

"Now..."

Yohoshi originally wanted to suggest that Soichiro Yagami take the Kawasaki sisters and Kitagawa Kaimu away first.

But just as she finished speaking, Tamamo-no-Mae's expression suddenly changed, and she whispered a reminder.

"coming."

As soon as she uttered those two words, a very strange sound suddenly rang in everyone's ears.

“Boom…Boom…”

The sound was approaching rapidly, growing louder as it drew nearer.

"This is..."

Kitagawa Kaimu heard this strange yet inexplicably familiar sound, accompanied by a clanging vibration, and suddenly, as if she had thought of something, her pupils dilated in surprise.

"tram!?"

Both Soichiro Yagami and Saki Kawasaki's expressions changed upon hearing this.

That sound...

Isn't it exactly the same as a tram that's moving?

But...

The tram I was on was still on the tracks, so how could another tram be heading this way?

If the two vehicles collide, given the tram's extremely high speed...

Won't we all just turn into mincemeat?!

Unlike Kitagawa Kaimu and the others who looked terrified, Yohoshi simply murmured to himself.

"Hmm... Seven minutes and thirty-two seconds have passed by now."

"At a normal walking speed, this distance should be about two kilometers."

"No one will slack off when their life is threatened."

"Even considering the speed due to exhaustion, this would definitely be more than a kilometer away."

"Safety confirmed."

At this point, Yohoshi looked at Rio Futaba and chuckled.

"give it to you."

"it is good."

Rio Futaba didn't say much, but took two steps forward, took a deep breath, as if she was gathering her strength.

Two seconds later, a barely perceptible light appeared in her eyes. She stretched out her hands and whispered, word by word, in unison with her soul's true form, the Bone Woman.

The Wall of Sighs.