Main characters

• Kang Ji-hwan as Sunwoo Wan^[2]

A thoroughly "modern boy," Sunwoo Wan is always dressed fashionably in the latest trends and likes jazz, gambling and women. He frequents the night clubs and has his face splashed on the tabloids. The most famous playboy in Gyeongseong, Wan is confident that it takes him only ten minutes to seduce a girl. One day he makes a bet that he will break his record by seducing not some pretty and sophisticated girl, but the prudish independence fighter nicknamed Jomaja. But what begins as false love later evolves into genuine feelings. He experiences real love for the first time, which later evolves into patriotism. The former hedonist turns into an enthusiastic independence fighter.

• Han Ji-min as Na Yeo-kyung

Unlike most young women of the era, Yeo-kyung has received an advanced education but still prioritizes pre-modern moral values. She still wears a traditional white blouse and a black skirt. She is strong-willed and stubborn -- to the extent that she makes others want to challenge her. Many young men have tried to approach her but failed. Rumor has it that she scolded on man for a full hour for daring to ask her out. That's why Gyeongseong guys have given up on her; they just sarcastically and disparagingly call her Jomaja, meaning "the last woman of Joseon."

• Ryu Jin as Lee Soo-hyun

Having received an elite education in Tokyo, Soo-hyun has outstanding work abilities, good manners and neat looks, and he is quickly climbing up the promotion ladder at the Japanese government in Korea. Everybody knows that Japanese high-ranking official Ueda Mamoru fully trusts and relies on him. But as talented as he is, Soo-hyun also has many enemies, including his Japanese coworkers, Korean underlings and even his childhood friend Sunwoo Wan. He merely ignores people who accuse him of betraying his country. His face is always expressionless and doesn't betray his secrets, and he only smiles briefly at decisive moments.

• Han Go-eun as Cha Song-joo

A famous gisaeng, Song-joo has spellbinding looks that can charm anyone, and enviable skills at dancing and singing. Only men of high social status can meet with her. Those who don't have enough money or power to meet with her in person can hear her songs on Gyeongseong Radio or see her smiling face on Japanese government PR posters hanging at the train station. Song-joo is the top celebrity of the era when there were no entertainers in Joseon yet.

Supporting characters

• Kang Nam-gil as Kim Tak-goo
• Lee Kyung-jin as Choi Hak-hee
• Ahn Yong-joon as Kang In-ho
• Yoon Gi-won as Lee Kang-goo
• Ahn Suk-hwan as Ueda Mamoru
• Choi Phillip as Yamashita Kouji
• Kim Hye-ok as Ueda Sachiko
• Park Ha-sun as So Young-rang
• Yoon Joo-sang as Sunwoo Kwan
• Yoon Ye-hee as Heo Young-hwa
• Heo Jeong-min as Shin Se-ki
• Go Myung-hwan as Wang Gol
• Jang Tae-sung as Chu Geun-deok
• Seo Hyun-ki as Mang-chi
• Uhm Hyun-kyung as Ueda Miyuki
• Choi Yeo-jin (cameo, ep 1)