Here she is, the saint in Japan Full Chapters                    

Here she is, the saint in Japan is a Manga/Manhwa/Manhua in (English/Raw) language, OFFICE WORKERS series, english chapters have been translated and you can read them here.

She was supposed to have been summoned as a saintess, but instead got thrown into a country called Japan. Alexandra Ollier, a.k.a. “Rei Natsukawa”, hides her magical powers and works as an office worker for a small company in modern Japan. “As long as I can live peacefully and uneventfully, this is fine.” says Rei, who faces many small troubles standing in the way of her lifestyle. Follow Rei Natsukawa, a mage possessing high level magical powers, and her seemingly ordinary — yet extraordinary — story. (Source: Young Champion)