@jankjellin never read the manga so I can't say for sure, but western names are super common in anime. I remember watching one of the first shows I ever saw, and wondering why they picked names that were impossible for the Japanese voice actors to pronounce. It happens so commonly I don't even notice it now.
@jankjellin I can only speculate... There are so many loan words in Japanese, there's been a great deal of cross fertilization among cultures over the centuries. Given the close connection with the US if you want to call it that, after world war II, I can imagine that maybe the western names don't sound as strange to them as they do to us out of context?
@jankjellin so much of Japanese goes back and forth between English/other languages and Japanese, it probably doesn't sound as odd, yeah. I learned the word for "rules" the other day but in anime all I ever hear is "ruru" for rules...