A Happy Trainer and His Grudge-Filled Pokemon

Lin Yu transmigrates to a world where humans and elves join forces to fight incursions from another dimension.

He successfully binds to a System that makes the elves fighting alongside him stronger by leveling him up.

But to catch elves, you need official aptitude.

For example, you need Fire aptitude to catch a Charmander, and Water aptitude to catch a Squirtle.

"Level 33 student Lin Yu detected. Elf aptitude: all types."

"What the heck?! What's that?"

"All types? I've never even heard of that!"

"A genius with the aptitude to catch any elf, as the legends foretold!"

But then...

"Lin Yu, what's the deal with this Psyduck?"

"Catching an elf like this is a waste of your potential! You should take better care of your future!"

Lin Yu: ??

You've got it all wrong.

Psyduck was the one who caught me!

The Host must collect resentment points from other elves to earn level-up points.

Sign-in task: Use Psyduck to raise an elf's resentment value to one hundred!

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.