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.
: How did you think you could do a basics lecture with such a lack of common sense?
: The only good move you made was bringing in EX Reiman, right?
: A basics lecture that ends with "control magic, then just punch stuff" is a joke, right?
: It's all over.
: Do people who go to the middle floors really think like that?
: Wouldn't it have been better to bring in Asagao-chan instead?
: Honestly, a lower-floor tutorial might've been more useful.
"...Today is about the basics."
: He's determined to continue.
: Gotta admit, his mental toughness is impressive.
: Lol.
: A basics lecture from an EX, surely useful...
: Yeah, sure.
: My stomach hurts from laughing.
: Laughing too hard, man.
Damn it... I was so determined to show a well-organized stream today, but I messed it up because I lacked just a little bit of common sense.