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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.
as Sora Asami / Umi Asami
as Hayato Mochizuki
as Xin Lan
as Hayato's Mother
as
as Jisook Kim
as Bingxuan Gao
as
as
as
as
as Takashi Asami
as Jiayi Wu
as Shufen Wei
as
as Wenxuan Xu