While at school published Chiyogami (Gay-Colored Paper Figures), a collection of his short stories and was acclaimed as a writer of neo-romanticism. He graduated from English Literature Department of Tokyo University. A disciple of Soseki Natsume.
After graduation achieved greater fame by writing Onna-to Akai Tori (The Woman And A Red Bird), Kaeranu Hi (The Days Gone By) and other novels in which he showed the so-called Miekichi style that represented a talented depiction of sentimental yearning and sensual pleasures combined in an easy and beautiful form.
Later became more realistic and finally ceased writing novels. Turning to juvenile literature, wrote Kosui no Onna (The Woman of the Lake) and other stories which are collected in 30 books. Started the Akai Tori (Red Bird), a magazine for children, which served as pioneer in the field of literature.