To any player who doesn't understand the MC looking like he does... And how the women think he's handsome...
When you gain access to the Library, there are books you can read. These contain a ton of lore and world building. Including the genetic history of the MC.
TL:;DR
His prologue skin and hair condition are a rare genetic issue passed down from his great great great grandfather.
After the prologue, midway through the game, we learn that...
Yes, we could have easily made him a generic,muscular, handsome character. But what draws many players to this game is how unusual he looks. How relatable he is to those of us who were never what many traditionally consider handsome.
We're done defending his looks. The game is nearing the end. If you're so hung up on what MC looks like, that's on you, not us.