has returned; is back (when attached to a noun ending in a consonant)
→ 이
phraseRare#24,180
has returned; is back (when attached to a noun ending in a consonant)이 is the subject particle, and 돌아왔습니다 means “has returned” or “is back” in a polite formal style. The exact sequence 이 돌아왔습니다 appears after a subject such as 미하일 (Mikhail).