Other names:
Bokura no Koi wa Shi ni Itaru Yamai no Youde; Our Despair-Like Love; Our Love is as Painful as Reaching Death; Our Love is Like Sickness onto Death; Наша любовь; 僕らの恋は死にいたる病のようで; 我们的爱如绝症一般; 無可救藥的愛情
From Midnight Scans: As a child, Beniko had two close friends, Umi and Sora. They were twin brothers that lived next door but due to his "Brother-Complex" jealousy Umi stopped being friends with her and soon moved away. Sora stayed and he and Beniko devoloped a relationship but later tragedy hit as he tried to save Beniko. Umi reapears with the same voice, looks, but a more twisted personality than before. How will Beniko confront the twisted love and affection given to her by Umi, instead of from Sora?!