보는 사람이

person who sees

→ 보다
phrase Rare #32,614
person who sees 보는 사람 means “person who sees” or “person who watches”; 이 marks it as the subject. Korean does not distinguish singular and plural here.
KO: 그 영화를 보는 사람이 많아요.
EN: There are a lot of people watching that movie.