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Ep 1: Is it a person or a ghost?
The one-of-a-kind prototype of Holo falls into Han So-yeon's solitary life, eager to help with anything she needs — if she will allow him.
윤현민
Ko Nan-do / Holo
고성희
Han So-yeon
최여진
Ko Yoo-jin
황찬성
Baek Chan-sung
이정은
So-yeon's mother
강승현
Yoo Ram
손종학
Nam Gi-Ho
정영기
Jo Jin-Seok
정연주
Ji Na
남명렬
Baek Nam-Gyu
정도원
Mr. Jeong
이유미
Ji Hye
양대혁
Lee Dong Sik
공민정
Jeong Ah
박건규
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