He is always in the background.
人は 影が 薄い。
Ano hito wa kage ga usui.
that (someone or something distant from both speaker and listener, or situation unfamiliar to both speaker and listener)
man; person; human being; mankind; people; human (Homo sapiens); humans as a species; character; personality; man of talent; true man; another person; other people; others; adult
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
shadow; silhouette; figure; shape; reflection; image; ominous sign; light (stars, moon); trace; shadow (of one's former self)
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
thin; pale; light; watery; dilute; sparse; weak (taste, etc.); slim (probability, etc.); small