Yuto looked at Kazura, who had become the face of Dou Dou Dou, and nodded quietly.

'The first thing that made me feel like I might be communicating with the demon world was those guys called Surt's Swords that we had to fight in Millimer. It was only a small question at the time. But then there was Count Cagliostro, who was a parasite on China and privatized the Dark Night's Leopard of the Ability Unit, and now Julian and the others who attacked the Shitenji family. These guys were using a technique that the demon gods of the demon world often used on the humans they turned to. That's how my doubts became certain.

That demon was a demon... or rather, it was a demon's magic.

Well, yeah. So I tried to throw a bite at them a few times. From the way they reacted, I'm sure of it.

This is foolish. But there is a similar technique in our world. It's a method that has almost been lost. I know of people who have gone wrong with it in the past. So I didn't question it too much.

What?

　Yuto was surprised. He didn't know at all what Sumazo had said.
　If that was the case, it might not mean that Julian and the others were generally connected to the demon world.

'No, but if I listen to you, I certainly doubt it. It's not normal for that foreign law to be revived now and used by so many people. That's why they reacted to it, right?

It was. Every time I was caught off guard, I made my feelings known.

Hmm....

　Kazura meditates and smiles bitterly.

'Bad move, Yuto. Well, you're getting younger.'

...What?

　Masato's eyes widen at Sumazo's point. The clown smiles bitterly and then gives a stern look at Masato.

I know you are loyal to your mission, but. Have you slaughtered all the people who put a bite on you?

　I'm sure you'll be able to find out what I'm talking about. He was able to get a sense of what Kazura was trying to say.

'One........missed.

''Listen to me, Yuto. Our family has a responsibility to protect the demon world and this world. There are many demons in the demon world that ordinary people with ordinary abilities cannot compete with. And there are many demon gods that control these demons with their power. That's why we have to protect the demon's cave. That's why you have to protect the Demon's Grotto, but there's a reason why you are our guide to the demon world.

　Kazura arched his eyebrows and crossed his arms.

"Therefore, we must not let those who are attracted to the demon world, or who are trying to communicate with it, know or suspect our true identity.

　Yuto lost his life at his own serious mistake.
　He realized the possibility that those dangerous people had ties to the demon world and he was too eager to confirm that fact.
　That's why I put a bite on them, but the fact that I put a bite on them is in itself like passing on information about Dou Dou Dou. Just like Kama Zang said, once the connection was confirmed, he had to take it down completely.

'I'm sorry, Grandpa. I'm........

Well, just in time. Click!

...What?

　Suddenly, Masato was dumbfounded when Sumazo let out a joyful laugh. As for Masato, who was feeling the urge to go and find Julian and take him out now, he had no idea why Tatazo was laughing.

''Yuto, remember what I just said. But, well, it's not much of a problem.

Yeah, what's that supposed to mean?　Grandpa. If my mistake brings Doudou to light I will be a colossal fool.

Yeah. Maybe they'll try to find out more about Du Du.

'......　Then we have to find out where those guys are and beat them all to death, even now!

Wait, Eugene.

'We can't wait!　If we give them the time of day!

Just listen.

　Stopping Yuto, who was in a hurry to make up for his mistake as quickly as possible, Sumazo.....grins.

''Don't underestimate Du Du too much. Your tendency to try to take on more than your fair share of responsibility is a flaw. You have to be cooler than that. I'm sorry I didn't tell you everything I knew about this place. But I think that's enough of that. From now on, you'll be the new master of this place. You've shown that you have what it takes to be the next in line to run this place. You've grown up to be a fine young man, Yuto.

What?

　Suddenly, and at such a time as this, the unexpected words from Sumazo that were handed down to him made Yuto freeze.

If you want to learn about the demon world, you will always run into Du Du. In fact, that is what I am doing. That's what I'm trying to do. So your mistake this time is just a matter of time. In that sense, it's not such a big problem.

　Kazura looks at Yujin as Kanji.

The family has been protecting the existence of the demon grotto and the demon world, and those that tried to come out from the demon world to us for a thousand years. It's not just that they've tried so hard to hide them. Du Du has been destroying people who are trying to bring mischief to the demon world and this world. Sometimes they are counterattacked and sometimes they are defeated by us.

....!

'Listen, I dare you to say it again. Don't underestimate me, Du Du. Do not condescend to him. You will be following in Liao Wei's footsteps. The Immortal World has a very strong alliance with you. It was all because of the pact you made with him. It is an unbreakable pact.

　Yuto huffs when he hears the name Senkai. And so his own upbringing is connected to it.

''The Sacred Realm........!　So, Master Sun Wei came to me.

That's right. That's right. The first and only family in the world to have a connection with the Senkai was Dou Dou Dou.

　Then Sumazo laid down on his side as if it was a hassle, propped his head up with one hand and yawned loudly.

''Huh~, Ryoichi and you, if you two fight seriously, the whole world will be turned upside down in amazement by your abilities. Also, if your mother is around, the world will be turned upside down twice and the world will go back to normal. Oh, I'm tired of looking so unaccustomed.

　When I said that, how did Sumazo really fall asleep.