It's been a long time since his parents' house felt very nostalgic, and Masato felt relieved.
　The front door was unlocked, probably because he had told them he was coming home on this day, so Masato walked in. I know it's insecure, but if someone is inside, the Dou Dou Dou family has always been like this.
It could be said that there is nothing to steal in this poor dojo, but the only residents are men, and most importantly, the master of the Dou Dou family would not be late for a robbery.

''Grandpa, I'm back!　Grandpa!

(Huh?　(No answer.)

　As expected, there was no way he would be absent this time.
　When I contacted him, I was worried that he might be reluctant to discuss the matter with me because he is so cumbersome. However, surprisingly, he said, "It's just as well, you should come because I have something important to discuss with you.
　At this time, Masato hung up the phone because he had a hunch that Kazo was planning to discuss the same matter with him.

(Julian and the others who raided the Shitenji family. There is a high possibility that those guys have a connection with the demon world. If that's the case, Dou Dou Dou couldn't keep quiet about it either.)

　Yuto turned on the light in the corridor and proceeded to open the sliding door of the living room, and there was Tatazo sitting on the tatami with several magazines spread out on the tatami, arms folded with a difficult expression on his face.

'What? You're there. Answer me, Grandpa........what are you doing?

　Yuto shifted his gaze to the group of magazines that Sumazo was staring at with a snarl...? It's filled with.

'What?　What is this?　Ten honeymoon destinations?　A popular wedding program?

"...Yeah?　Ooh!　Yuto!　Hey, there you are!　If you came back, you could at least talk to him!

　Unsightly and extremely flustered, Kazura gathered up the magazines and hid them behind him.

'I was talking to you. Rather ... what were you looking at?'

'Nothing!　It's nothing!　I didn't see anything!

....

　I wanted to rush in to ask if that was the expression and attitude of a nondescript person, but it's always difficult to understand when you try to get seriously involved in what Katoro is doing.
　From now on, when the Dou Dou family is about to talk about something important, they don't want to go off topic, so Yuto decided to pass it off.

''Haa~, Grandpa, I want to talk to you about something early on,''

'Oh, oh, umm!　Then go make a cup of tea.

All right. Tea leaves at the usual place?

Yes!

　When Yuto put his bags down and went to the kitchen, he heard the sound of a desperate attempt to hide a magazine from behind him. Yuto gasped and boiled a cup of tea.



　As soon as he set the tea on the table, Masato cut him off.

''Grandpa, the consultation is about the people who attacked the Shitenji family,''

　Kazura sips his tea.

'Oh, those vigorous guys. What about those guys?''

'What?　Grandpa, didn't you notice that?

What do you mean?　What's going on with them?　Don't tell me........you're actually a woman or something!

There's no way!　Those guys have a lot of knowledge about the demon world!　That's not all, maybe they're still connected to a human or demon god in the demon world right now.

Mm, is that true?　Yuto.

　Hearing the word "demon world," even Sumazo, who is indeed a messed up old man, has sharp eyes.
　It's only natural. It's all about the significance of the Dou Dou Dou's existence.
　Or rather, it was overwhelming those guys without thinking about it, and Yuto's head hurts.

''Fufu I don't have any proof. But I'm almost certain of it. They were using a half-demon technique that the humans on the demon god's side of the demon world were very good at. Moreover, they even had the ability to transform themselves into demons. In other words, they were in contact with someone in the demon world through a different route than the Demon's Grove. If that's the case, it's a big problem for the Dou Dou Dou, the guardian of the Demon Lai Grotto. We have to identify their organization and take down the entire route right away!

''Well, calm down, Yuto. You are right, that is a very serious problem. But there is not enough information. And perhaps they don't travel to and from the demon world as freely as the Demon Laird. If that's the case, any monster from the Demon Realm could be coming from there right now. If that was the case, Ryoichi, who is over there, would have noticed it right away.

But...!

'I know. I don't know how, but if you're in regular contact with someone in the demon world, I can't let it happen. But when you do, do everything. There must not be anything left out. Then it will happen again.

　The expression on your face disappears from the Kazura, and you can sense a quiet but cool and steely presence of mind. It's a ki that makes you feel as if you will eliminate anyone who gets in the way, even if they are innocent.
　But Yuto knows this.
　This is Du Du.
　They have been protecting the Demon's Cave for a thousand years, slaughtering or sealing up demons, demonic gods and humans who have tried to get involved in the demon world. That is the super grade sealed property that Dou Dou Dou handles.
　Moreover, the opposite is also true.
　The Dou Dou Dou has traveled between this world and the demon world, and the Dou Dou has suppressed all those who tried to come to this world from the demon world side.
　All of this is the role of the Du Du family, as determined by the first generation of the Du Du family.
　Why does he have to take on this difficult and important role, he never wondered. Rather, he was proud of it.
　Yujin respected the first generation of the family and, to put it simply, he loved them.
　It could be because he was a great ancestor.
　But the real reason is because Sumazo taught him the reason why the first generation decided to become the defensive wall of this world.
　It was told to him by Katazo when he was a child, when he was completing a grueling training course deep in the forest at the foot of Mt.