Sora and Umi (both played by Lee Tae-kyung) who were born to a Japanese father and a Korean mother and raised in South Korea. Sora now lives in Shanghai and works as an illustrator. When she meets a Japanese guy named Mochizuki, they become close. This is when her sibling Umi visits. Umi was born inter-sex and had undergone gender reassignment surgery to become a woman. Umi encourages Sora and Mochizuki to fall in love, but Sora becomes mentally unstable.
Cast
Lee Tae-kyung
Sora Asami / Umi Asami
Tsuyoshi Abe
Hayato Mochizuki
Agnes Chan
Xin Lan
Tomoko Hayakawa
Hayato's Mother
Lina He
Unknown
Myung-Hwa Hong
Jisook Kim
Xiaoming Jin
Bingxuan Gao
Eun-ji Jo
Unknown
Gaseul Kim
Unknown
Min-Seong Kim
Unknown
Jua Lee
Unknown
Fan Li
Unknown
Taisetsu Miki
Unknown
Kenichi Morimoto
Unknown
Woohyeong Son
Unknown
Hiromitsu Takeda
Takashi Asami
Jenyao Tsai
Jiayi Wu
Meizi Wang
Shufen Wei
Congxi Yang
Unknown
Yalin Zhou
Wenxuan Xu
