Get ready first. I'm not stupid enough to storm an unknown place without any preparation. I don't know if the other side of the door is a different world or another part of this world, but the lighting would be mandatory because it was like a cave. I didn't feel strange odor or breathlessness when I opened it earlier, but if carbon dioxide was accumulating, I would also be in danger of suffocation. You'll need a flashlight as well as a candle or a pine light. If the fire goes out, we'll know there's no oxygen. If there was an accumulation of explosive gases... No, in that case, you can tell by the smell. But you heard that propane gas is odorless... Yeah, I can't talk about it just because I'm freaked out. When you open the door, throw in even a match that's on fire and let's lay ourselves down right away. You just have to make sure it doesn't explode and let it in.

Let's get back to the lights. There must have been a lamp. My father said it was a tourist souvenir or something. It's like a toy, but I could have used it with kerosene. What about weapons... cutter knives and fruit knives?

I have no choice. Let's go to the home center and find something. That said, the public eye is loud when you buy a blatantly murderous one. Try to create something that doesn't look too noisy and then is likely to be a sufficient weapon.

Throwing in the burning paper didn't cause an explosion. Make sure it doesn't burn unnaturally hard or disappear quickly on the reverse, then make sure it's equipped for exploration.

"Headlights and spare flashlights, kerosene on lamps, portable food in water bottles, bond cream on emergency disinfectants, military hands, weapons were scooped and nailed out on the Ten Toku knife, golf balls that were at home instead of hand swords, then digital cameras for recording, ropes of lifeline were built on the veranda fence and..."

Can I do this because I have no intention of staying here long? Let's just take a quick look at the close range, and if anything happens, let's just go back to square one.

I felt dizzy for a moment when I stepped into the cave, but probably because of the tension. I felt like I was in a dazzling light, but it's my fault, I'm sure. After stopping for a while to make sure it was nothing, I slowly walk out to the back.

The oil lamp fire is no different than when I was indoors. The lights aren't weakened, so there doesn't seem to be any concern about acid depletion, and it won't be too much oxygen because the fire hasn't gotten unnaturally stronger or stronger. Oxygen can be harmful if it's too little or too much.

It doesn't smell strange, there's no sound. It also has a firm feel on the ground. It doesn't seem like quicksand or anything, but let's proceed without alarm. Whether something happens or not, when the remaining amount of kerosene in the lamp is cut by half, I go back to my room. Exploration is fine, little by little. And I wish I could bring back something that might prove something.

The cave is the main road, not even a crack in the branch. Though slightly flexed, it seems to be generally straight stretched.

Looks like the walls are stiff after a bit of following. Sharpening shards won't be easy. There are wrinkly irregularities in the walls, but they are smooth and have no cracks. Even what looks like a crack in the wall is actually only a smooth blur, not a crack. No traces like machined, but the walls and ground are oddly smooth. It's odd to say that not one of the pebbles has fallen. I don't even see anything like footprints. There are no signs of manpower being added, but it feels unnatural somewhere. Is it close to a movie set? There is no water.

I wondered if there was any creature, and it was there before I looked around.

A clear agar mass, about five to ten centimeters in diameter. A hemisphere that feels like slime coming out of the game. When I follow it gently, I shudder weakly with the pull, trying to escape.

No... real slime or this.