Son is sexually attracted to his sick mother

After her older sister left to study in another city, Han Gu lives with her mother in a small town. He is a good swimmer and is preparing for the national championships in swimming. But one day his whole life turns upside down - he is informed that after an unsuccessful suicide, his mother fell into a coma. Han Gu has to take care of his mother in the hospital every day and completely forget about his personal life. Watching his naked mother, the son begins to experience a strong sexual attraction to her, which doctors notice. The older sister returns from school and finds out about this. Fearing that her younger brother's infatuation may go too far, she tries to manually satisfy his sexual need.
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