For decades, mysterious dungeons have been popping up all over the world. The resources found within these dungeons have completely reshaped human society, turning life upside down. In this world, Tsukasa Kisaragi, a high school student and active dungeon explorer, harbors a lingering regret. Back when he first got his explorer license, his social anxiety held him back from forming any party or making friends. But whether it was a blessing or a curse, Tsukasa was born with an extraordinary talent for dungeon exploration. He was so good at it that even solo, he could conquer any dungeon without breaking a sweat. He got used to going it alone, and before he realized it, he had become one of the few EX-rank explorers in all of Japan—so rare they could be counted on one hand. Despite his incredible skills, Tsukasa kept his true identity hidden, living a low-key life. But one day, he stumbled upon something that would change everything: dungeon streaming. And from that moment, his world would never be the same.
As I continued walking through the depths, it grew darker with each passing step. As expected, by the time I reached the 40th floor, the surrounding area was completely shrouded in darkness, and without any source of light, I wouldn't have been able to see anything. Though I'm unaffected, the way sound travels underwater is different from on land, which feels a little unsettling. That said, the speed of sound in water is about five times faster than in air, so it's not like I can't hear anything.
One small comfort is that, unlike the real deep sea, the dungeon's floor is solid beneath my feet. I don't have the sensation of sinking into a bottomless abyss—just walking through darkness.
: If you're thalassophobic, just looking at this screen would make you lose it.
: Even without thalassophobia, this is terrifying.
: Don't underestimate thalassophobia!
: Those with actual thalassophobia have probably already quit watching this stream.