My Shy Boss

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Yeon Woo-jin

Eun Hwan-Ki

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Park Hye-su

Chae Ro-Woon

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Yoon Park

Kang Woo-Il

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Gong Seung-yeon

Eun Yi-Soo

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Ye Ji-won

Dang Yoo-Hee

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Heo Jung-min

Eom Sun-Bong

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Lee Kyu-han

Reporter Woo

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Jun Hyo-seong

Kim Gyo-Ri

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Stephanie Lee

Director Park

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Kim Eung-soo

Hwan-Ki's father

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Kim Ye-ryeong

Hwan-Ki's mother

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Lee Han-wi

Ro-Woon's father

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Han Eun-seong

Jang Se-Jong

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Kim Mi-kyung

Ro-Woon's mother

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Jung Yi-yun

Deputy Jung

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Hwang So-hee

Deputy Lee

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Han Chae-a

Chae Ji-hye

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Jang Hee-jin

Seo Yeon-jung

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Kang Nam-gil

Brain Security

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Seong Byeong-suk

Orphanage director

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XIA

Himself

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Ji Dae-han

Advertiser

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Choi Byung-mo

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Jeong Dong-gyoo

Investor in Brain

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Jo Hyun-sik

Man at the men's restroom

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Kim Ki-doo

Man at the men's restroom

Choi Hyuk

Man at the men's restroom

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Hur Young-ji

Young Gyu's transgender daughter

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Park Young-kyu

Hwang Yeong-Kyu

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Kim Dae-hee

Yeong Kyu's manager

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Choi Dae-chul

Restaurant management

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Park Sang-myeon

Master Jin

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Lee Byung-joon