Spark

Na In-woo

Yoon Ga On

Nam Bo-ra

Son Ha Neul

Yeo One

Ji Seung

Joo Ah-reum

Won Jae Kyung

Park Jin-joo

Yang Jin Soon

Kwon Eun-soo

Gong Ah Reum

Kim Ki-doo

Bong Soo

Bae Ki-sung

Heo Joon Il

Kim Jin-geun

[Son Ha Neul's father]