Twinkling Watermelon

Ryeoun

Ha Eun-gyeol

Choi Hyun-wook

Ha Yi-chan

Seorina

Choi Se-gyeong / On Eun-yu

Shin Eun-soo

Yoon Chung-ah

Choi Won-young

Eun-gyeol's Father

Seo Young-hee

Eun-gyeol's Mother

Jung Sang-hoon

Master

Cheon Ho-jin

Grandpa Viva

Goh Doo-shim

Go Yang-hee

Kim Joo-ryoung

Im Ji-mi

Bong Jae-hyun

Ha Eun-ho

Koo Jun-hoe

Koo Jun-hyeong

Ahn Do-gyu

Oh Ma-joo

Yoon Jae-chan

Kang Hyun-yul

Lee Ha-min

Lee Si-guk

Lee Su-chan

No Se-bum

Kim Tae-woo

Yoon Gun-hyung

Kwon Do-hyung

Yoon Ju-yeop

Lee Soo-min

Yoon Sang-a

Lee Suk-hyeong

Jung Bal-san

Lee So-yeon

Adult Choi Se-gyeong

Park Ho-san

Choi Hyun

Yeon Oh

Jung Ji-oh

Oh Hee-jun

On Ji-hwan