People are all about Jeanne, previoulsy introduced, but for me, the main thing of this chapter is the fact that MC is NOT japanese but do know of it's existence (seems like he lived in a prior age with aristocrats and whatnot, and not in the "modern age").
It's rare to see someone else get isekai-ed, there shouldn't be too much "rice, bath and soy sauce" from him, but maybe his japanese officer will do this job.
As for Jeanne she changes from the previous chapter where she was introduced, or is just me?