Shiroi Heya no FutariShiroi Heya no Futari.

Shiroi Heya no Futari (Japanese: 白い部屋のふたり; lit. 'The Couple in the White Room') is a Japanese manga one-shot written and illustrated by Ryoko Yamagishi, originally published in the February 1971 issue of the manga magazine Ribon Comic. Focusing on the romance between two students at an all-girls Catholic boarding school in France, it is widely considered to be in oldest manga on the yuri genre made for a female audience (shōjo).