I didn't know if the expression "underground" was appropriate, but Ray and Grimm went through it.
　Both Ray and Grimm have night vision.
　Even so, you can't see the night in a place where there is no light.
　Regardless of Ray, Grimm was undead, so I could watch it closely without a light source.
　Grimm looks at Ray and waves his hand lightly, apparently struggling to keep sight.
　At an instant a faint light bulb was produced in the air.
　The light bulb wasn't that bright, but it's just to keep Ray's eyes from dazzling with brightness.
　He probably thought this level of brightness would be enough for a nocturnal ray.

"I'm sorry,"

　Ray also knows Grimm created a light bulb out of his mind.
　That's why Ray thanked Grimm.

'I don't care. In this case, Ray's action is the only thing.'

　Having said that, I'm sure it's actually because of Ray.
　If this wasn't Ray's word, Grimm would certainly have made a light for Ray.
　Ray and Grimm go underground, using Grimm's light bulb as a source.
　It's been a few minutes since I started walking, but I still haven't reached the bottom.

"How long is this passage exactly?"
"Well, I don't know about it at all,"
"...the aisle that Grimm built?"

　But why don't you understand?
　Grimm shakes his head to Ray, who tells him so.

'There are still a lot of unknown places about this ability. It's possible that 儂 is not used to it. ... Nevertheless, I never imagined that he would do this with Ray.'
"Is that so? ...if you say so,"

　At first Ray was suspicious of Grimm's words, but as long as Grimm was undead, he couldn't go out so easily.
　No, I'm sure it would be a disaster if people could see me walking with Ray, let alone.

"In that sense, this was the best place to go. ... But it's a different matter whether you're with Grimm or not. It's not like that."
"Um"

　Grimm nodded briefly to Ray's words, but his expression... was not exactly articulated, but he was relieved inside.
　Now that I think of Ray as a grandchild, it's quite a shock to be hated by his grandchildren.
　That didn't mean to spoil Ray, though.
　However, it is safe to assume that Grimm is sufficiently spoilt in the eyes of others by magically searching for places that cause the transition from another world.
　Grimm was right to see what he was interested in rather than pampering.

"Was Grimm an adventurer like this when he was alive?"
"Well, I was doing a similar thing, though I can't compare it with the Zepyle."

　Grimm was a genius, too.
　Grimm's misfortune was that his contemporaries, like Zepail and the Zepail family, were among the geniuses.
　Genius, if used as a term, could have been called a higher genius.
　If the genius is to know ten by listening to one, and the genius is to know one hundred, the members of Zepail and the Zepail family can know ten, ten, and possibly more by listening to one.
　Even if a person who is above a certain level is called a genius, everything above that line becomes a genius, and the difference in ability among the genius becomes large.
　In that sense, it was undoubtedly a great misfortune for Grimm and... others who were called geniuses but did not equal the Zepyle family.

"Hmmm. Zepile was amazing, after all."
'Of course, if you're not such a genius, you can't imitate a new art of sorcery.'

　The reason why Grimm seems to be proud of himself is probably because he still admires Zepail and his family.
　Ray might have added a memory correction, though he didn't he think so?

"Then, do you think Zepyle could have transitioned to another world?"

　Rey asks Grimm, relying solely on the little lights he creates.
　For Ray, it was amazing that he tried to touch his soul in an accident in Japan, but he wondered if he could not directly spread to another world.
　If Zepyle could spread directly to another world, it would have been a different way than to find one's own soul.
　...in fact, Ray predicted that if he was asked if he wanted to go to a different world, let alone other countries, there would be no shortage of people nodding.
　Especially if you are enjoying subcultures such as comics, anime, novels, and games.
　Without doing so, Zepyle could have been in the space between the world and the world... but could not have been directly transferred to another world.
　As Ray points out, Grimm snaps his slippery feet, floating a little over the ground.

"But... Mr. Zepyle is trying to do something impossible...?"
"Huh? Oh, I guess. It's only my prediction that Zepail and his family couldn't go to another world. I think it's certain, given the presence of Takumu."

　Thakum tinnose
　It's a member of the Zepail family, living in Ray's hometown.
　Wearing school uniform, it may take some time, but he is considered to be from the same Japanese background as Ray.
　If Takum could really spread to another world, it would not be surprising if he wanted to return to Japan.
　However, if he could not imitate it in the end, he would not have been able to spread to another world.

"Well, I see. My son gave me Zepyle... Zepyle..."

　Grimm muttered as if in deep emotion.
　From Grimm's point of view, Zepyle is simply an object of admiration, and he probably never thought of catching up with him.
　Ray opens his mouth as he follows Grimm back on.

"Isn't it bad to try something that Zepyle couldn't do?"

　It's not just to encourage Grimm, it's not a little calculating.
　If Grimm could go to another world freely, maybe... maybe, indeed, by any chance, billion would be the best chance, but Ray could go to Japan.
　Needless to say, I am not Reiji SAEKI when I was in Japan.
　My family and friends won't recognize me as Reiji SAEKI when they see me now.
　Still... but it was only natural that I wanted to see my family and friends at a glance if possible.

'When Ray says so, I feel like I can do it somehow. ... That's going to change a lot depending on what happens to this case.'

　Grimm, who was walking down the aisle, stopped and muttered.
　As Grimm said, Ray also turned his eyes forward.
　Then, as Grimm said, the passageway was certainly over, and from there a faint light could be seen.
　It clearly indicated that there was something ahead.

"... well, what will come out? There's something so metastatic that I'm sure he's such a big shot."

　Breathe in to calm yourself down, and proceed down the aisle conscious of mistrings so that whatever happens can be dealt with immediately.
　As long as the Seto is too large to move freely, it is natural that Ray's weapon, Death Size or twilight spear, cannot be taken out in such a place.
　However, since we don't know how much space there is likely to be ahead, it's highly likely that we won't be able to take out the spear of death size or twilight there.
　At any rate, Ray and Grimm quickly head down the aisle to the lighted area, rather than carefully...
　It's probably better to move more carefully, but with Grimm and Ray in place, it's because they can handle anything easily.
　Then Ray and Grimm came out into space and understood why this space was so brightened up.

"This is..."

　The size of the space is large enough to accommodate one aristocratic house...and possibly two.It's as high as coming down the aisle made by Grimm, about 10 meters high.
　Near the center of such a place was a mass of light... no, a mass of flame.
　This is also a very large mass of flame, about 4 to 5 meters tall and similar in width.

"It's not Whisp.
"Whisp? Is that Willowisp?"

　Willowisp
　They are called human spirits and spirits, commonly known as Whisp, as Grimm said.
　I'm sure they're monsters, but they're aggressive to others, and they're friendly to help.
　Nevertheless, Ray knows -- in books -- that a whisper is as small as a fist and as large as a man's head.
　It's not the size Ray and Grimm are looking at right now.
　That's why Ray wasn't convinced by Grimm's words, which he initially said were whips.
　But Grimm nods back to Ray's words.

'Well, as far as 儂 can see, it's different in size, but it's definitely a whisper otherwise... ...but I'm concerned that the flame is light.'
"Is it thin?"

　That being said, Ray and Whisp can't understand if the color of Whisp is light since this is the first time I've seen Whisp.
　But unlike Ray, it was not clear to Ray that Grimm had lived for a long time -- he was.
　Naturally, he knows more about monsters than Ray does.
　That's why Ray has to agree with Grimm if he says so.

'Well, of course, since there are different kinds of whips, the colors of the flames vary from one to the other. Blue, red, yellow, white, and so on.'

　Having been told that, Ray once again looks at the huge whisp that exists just beyond his gaze.
　The color is close to yellow, but if you ask me if it's light, I'm more likely to ask if it's true.

"Whatever the matter of color, what is Whisp... and there's such a huge fellow here?"
'As long as you are here, I think there is only one reason?'

　The meaning of Grimm's words was obvious.
　Why did we come here?
　With that in mind, it's clear what Whisp was doing here.
　But Ray didn't immediately realize that because he knew that Wisp had the ability to... to transition to another world.
　However, once the pieces of the puzzle are complete, Ray will get to the answer.

"Rare Species"
"Well. Or maybe it's a superior species."

　Grimm readily affirms Ray's words.
　Listening to Grimm's words, Ray turns to Whisp again.
　Ray and Grimm are nearby, but there is no sign of an attack, they just keep drifting in the air.

(Is it because Grimm is here?)

　Even if it's a rare species or a superior species of Whisp, there's no way there'll be a chance of winning if Grimm is in front of us.
　Can't you guess that and move?
　That's what Ray thinks, but Grimm shakes his skull, perhaps realizing he's comparing Grimm with Whisp.

'It's not because of the presence of a niece. It's partly because of the paleness of the colour I mentioned earlier, but perhaps... it's because of the repeated transitions from another world that have consumed the most magical powers.'

　If you say so, Ray will have to agree.
　Not only did they metastasize lizards and greens, but they also metastasized the towers of birth and the huge lakes.
　With that in mind, is it sufficient to have magical powers like Ray?
　That's what I thought... then I wondered why I had transferred the lizard again today.