When the Colossus Civilization's envoy started taking off his clothes the moment they met, Michel refused.
It wasn't that he was immune to temptation. The key was, if you were going to seduce someone, at least send a female! If that really wasn't possible... a female of another species would be acceptable too.
Crossing species boundaries was one thing, but you sent a male? Was this supposed to test an official?
But he soon realized he had misunderstood. The other party merely wanted to show him his back.
On the back of the Colossus Civilization's envoy were two extremely vestigial wings... well, they could barely be called wings. They looked more like two protrusions and were terribly awkward.
"In the distant past of our civilization, our wings had not yet degenerated. In the myths and legends of that era, the Angels from the heavenly realm were our ancestors.
"Later, after we entered the interstellar age, our wings gradually degenerated. Now, many people no longer even have these ugly wing roots."
The Colossus Civilization's envoy spoke with great excitement. For a time, wings had been a symbol of noble bloodline, but social attitudes gradually changed, and some people even had the troublesome things surgically removed.
Yet no matter the era, there were always people who longed for ancient civilization. The Colossus Civilization's envoy was one of them.
What he loved most was researching ancient texts, flaunting his noble lineage, and taking pride in the traces of his wings.
Naturally, he often traded barbs with the opposition on various occasions. Their strongest argument was... these completely degenerated things were useless, served no purpose, and were ugly.
One could imagine how excited he had been upon learning that the Angel Civilization existed.
In truth, class was an inevitable product of civilization.
Using bloodlines