Anata to Mita Sakura ~Shimaizuma~

Issei loves Nanako. But she marries his brother, Eiichi, after graduating high school. But a few years later, Eiichi suddenly passes away... And this spring, he starts to live at her house to join a preparatory school for university entrance exams. Later on, Yuka and Chigusa, Nanako's sisters, start to live there as well...