He sat down on a frost-slicked boulder and pulled out his Pokétch. The HM app blinked softly. Waterfall . He’d found the hidden disc in a dusty corner of the Lost Tower, sandwiched between a Super Potion and a bitter memory. But knowing the move and using it were two different things.

“Well,” Lucas said, wiping sweat from his brow, “that’s not a door. That’s a ‘keep out’ sign.”

The memory of the move wasn’t just a data packet—it was a sensation. Buizel’s muscles remembered the struggle of salmon swimming upstream, the defiance of a Magikarp evolving into something greater. Its tail fin stiffened. Its paws grew small, hooked barbs—not for fighting, but for gripping wet stone.

Beside him, Monferno chittered nervously, flexing its flaming tail. Staravia ruffled her feathers, while Buizel—ever the optimist—paddled eagerly at a small puddle, as if offering to take the plunge. But Lucas shook his head. The waterfall was at least fifty feet high, and the plunge pool below churned with unforgiving rocks.

It's worth noting that, like other HMs, Waterfall is also a move that Pokémon can learn. As a move, Waterfall is a Water-type attack that deals damage and has a chance to make the target flinch.