That actually doesn't look bad on Wakana, it's certainly much better than the gaudy shirts Marin had him try on before.
Much has been said over how Marin is beautiful, but at the end of the day it's Wakana who's grabbing the attention of and getting treated well by the guys from her circle of friends. They're actually good dudes. I find that kind of subversion unexpectedly fresh and funny, if this was one of those generic romcoms they'd all be fawning over her and giving him the stink eye instead.
Sono Bisque Doll be like: "We don't do that here."