Kanto Region, Pallet Town, Professor Oak's Laboratory.
In the living room, George, Professor Oak, and Shigeru sat neatly on the sofa, staring unblinkingly at the battle live broadcast on the television.
"Grandpa, Grandpa! That Gren... what frog should be a Water-type, right? Why was Octillery's Charge Beam ineffective against it?"
Shigeru clutched Professor Oak's research uniform, his eyes full of confusion and curiosity.
Professor Oak was naturally delighted that his grandson was so eager to learn, but instead of answering directly, he turned to George.
"Greninja is a Pokemon from the Kalos Region, and Brother George knows it very well. Why don't you ask him?"
Shigeru did not dwell on why his grandfather would not explain it himself. He simply turned to George decisively and looked at him with wide, clear, watery eyes ⊙ω⊙.
Seeing such a well-behaved Shigeru, George could not help ruffling his little hedgehog-like hair before speaking.
"Greninja is indeed a Water-type Pokemon, so it is weak to Electric-type moves.
But even Pokemon of the same species can possess entirely different special abilities.
For example, some Squirtle's Water-type moves become much stronger when their stamina is greatly depleted. Other Squirtle cannot do that, but they can slowly recover stamina at all times during rainy weather..."
"So Gren... ninja has a special ability too!" Shigeru immediately raised his hand to answer (`^), then wore an expression that clearly begged for praise.
"Mm, that's right! Sato's Greninja is a very special one. It can temporarily change its own type to match the type of the move it uses.
In other words, when it uses Aerial Ace, it is Flying-type; when it uses Play in the Mud, it is Ground type."
"Ground types are immune to Electric types!" Shigeru exclaimed, instantly feeling that the Greninja on the television was incredibly,