Review Detail of Skywolf_1 in Heavenly Saga

I've read only 4-5 chapters yet So don't know where the story is going I liked it but dear author what's with the pointless and needless use of Japanese words/verbs the totally make the story feel out of place With a mediaeval western world building use of Japanese words makes me feel awkward while reading especially the use of word seishin or whatever which is important part of the world's power system As a non-japanese reader who completely doesn't understand the words' meaning it makes me turn my back on the story I really hope you can change the use of Japanese words with more familiar English words or atleast translate those words into English