About the Game
Kona Ninja is a retro platformer game that can shred the terrain with a sharp blade. As people rumored, this ninja only attacked the corners. Although this sounds weird, trust me, it will be quite fun to play!
This game is designed and developed by DRING.
Controls

← & → | Move
Z 〇 | Jump
X × | Cut (only for corners!)

Story
According to legend, there is a group of ninjas called Kona Ninja who are well-trained, restrained and decisive. Their most powerful move is to cut corners. Their sharp blades will lead to the corners of the building. In an instant, the wood shattered and people went. Therefore, they are always sneaky masters.
But to become the real Kona Ninja, one must prove oneself-by cutting off the legendary golden corner. Our protagonist is about to complete this destined mission.
Future
This game is entries for 'Finish Your Game' Jam, and the development is now complete. Although there are still some problems with the game, I am quite satisfied with the overall situation. If there are no major bugs, this work should not be updated. Hope you have fun!
Links
URL itch.io page
URL GameJam entries page