Seeing that his older brother had physically opened the lock, Bang tactfully stepped forward with his hands behind his back.
The old man raised a hand, gripped the knife-like notch Bomb's Iron-Cutting Fist had sliced into the iron door, and casually pulled outward.
As one of this world's foremost martial artists unleashed his strength, the steel door instantly twisted between Bang's fingers as though it were made of paper. Its sharp edges failed to leave so much as a scratch on his well-trained fingers!
Bomb, watching his younger brother work with a smile from the side: Kids, don't try this at home~~
Creeeeak-
With a teeth-grating screech, the doorway opened wide, revealing a vast, dark room within.
The only light in the Monster Association's passageways came from oil lamps on the stone walls. The two had walked all this way, and the lamps were now far behind them.
Bomb swept his gaze across the room, but even a martial arts master's eyes could make out only rough oval outlines.
At this, he frowned and said, "It's too dark. I can't see anything clearly."
"Just a moment, onii-chan."
Bang rummaged through his trouser pocket and pulled out the S-Class Hero communicator he normally used as a phone. With a click, he switched on its flash to use as a flashlight, shining it through the open doorway. "There, doesn't that do the trick?"
By comparison, Bomb felt like an antique left behind by the times. "...You really are quite adept with technology, Bang."
Bang chuckled in reply, "Oh, hardly. Just average, onii-chan~~"
As the communicator's light shone inside, a large room packed with cultivation vessels of various sizes and a great deal of strange equipment appeared before the two old men.
"This looks like the Monster Association's monster cultivation room. Some sort