Death Sworn Zed splash eyes issue

I think I understand that idea was Zed looking into infinity with his eyes almost shut due to internal suffering (or something like that) but...

Shape of eyes say that he is happy and smiling. I don't intend to troll or something. This specific form of eyes when they getting narrower to edges and their angle say that he is satisfied inside and smiling.

Look at few examples and try to analyze your reaction. Even though people on pictures fake it - you still think that they are happy. Example1 Example2 Example3 Google results with "Happy facial expression"

Heck. Even artists that draw smiles understand this. Smile example Google results with smiles

If you're not convinced by my words you can easily google something like "smiling facial expression psychology" or "smile physiognomy".