There are many different screw head types. Like those screw heads on game consoles that are designed to keep you out. Those should have grump faces to represent them, whereas Yuma Kano’s design is all about fun.
Screw is a collaborative project between him and Komura Seisakusho, a screw factory in Japan. The idea is that his screws are “a product that can bring joy.” If you were taking something apart and didn’t expect to see a screw like this, I imagine it would make you smile.
Of course you need a smiley face screwdriver to screw them in and unscrew them. Who says tools can’t be fun and functional?