>>3861971He doesn't gain the wings until something like 200 chapters in, but they've been the focus of tons of art. When he first arrives in the other world he's inside the body of a prince with blond hair and purple eyes who is being held as a diplomatic hostage. Having had stomach troubles in his original world he very quickly takes to enjoying French cuisine at all opportunities. Getting distracted by tarts doesn't help in his quest to avoid the main characters though, and his surprise holy powers end up attracting a number of people and creatures.
Translations aren't too far but I believe the wings come in after he returns to his world and comes back in his original body (brown hair, brown or purple eyes). He has a connection to the author who created the other world, which makes him something like an associate of god.
