Was the last remaining sin in the novel " Remaining Sin " dead? Was he with Big Breasted Sister?

The ending of 'Remaining Sin' was still unclear because the author, Yu Sin, had not officially revealed the ending. However, according to the plot of the novel, Yu Sin should have died in the end and not be with Big Breasted Sister. At the end of the novel, he was sentenced to prison and spent the rest of his life in prison. Although he received help and support from other prisoners in prison, he eventually lost his freedom. Therefore, it could be said that Yu Sin died in the ending of the novel. As for Big Breasted Sister, the novel did not clearly describe her ending. In the novel, the relationship between Yu Zui and Big Breasted Sister was a complicated and delicate topic, so her ending might be unknown.