A story of two sisters, Yuki and Yumi, who are linked together more closely than what it would first seem. Haru, a first year student in Kakunoshima high, joins the literary club and meets the shy and reclusive Yuki, but soon finds himself on a collision course with her overprotective sister...

Project Dualis is a visual novel on love and the meaning of one's self.

[From Lemma Soft Forums]