《おさん》是太宰治和情人投身玉河前写的一部遗书式的小说。小说中不仅展示了他自杀前的心态,也充满了由于自己的软弱对家人造成伤害的愧疚感,并流露了死后对妻子及家庭的期望。 “お さ san” is a dictatorial novel written by Taizai and his lover before Jade River. The novel not only shows his mentality before he committed suicide, but also feels guilty about hurting his family because of his own weakness, and shows his expectation of his wife and family after his death.