Hyakuoku Nengo no Kimi no Koe mo

Includes the oneshot Instinct and a Chromosome: An angsty but sweet story about two women in love. Nanako is glad to escape the stifling atmosphere of her hometown and come to Tokyo for business school. There, she meets Yuri, and the two quickly fall in love and begin a relationship. But that isn't the end of the story--the pair still have obstacles to overcome before they can get their happily ever after. (Source: Lilicious)

Also includes other oneshots.