Futari de Hitotsu no Koigokoro

Despite his family’s wealth and prestige, Souchi’s childhood was one of hardship and misery, marred by the travesty of his parent’s failing marriage. In this time of crisis, his only memories of happiness were those spent with a charismatic girl named Chii: a childhood friend who left a lasting impression on his heart and soul. After ten years of separation, Souchi is finally reunited with Chii, suddenly informed she has been his arranged wife since adolescence. Yet what should be a joyous reunion becomes a state of confusion, for it seems the unique girl from his past, was not truly one of a kind after all.

[From Eroge Review]