ATRI : MY DEAR MOMENTS VOL.1-13 END

STORY :

In the near future, a sudden and unexplained sea rise has left much of human civilization underwater. Ikaruga Natsuki, a boy who lost his mother and his leg in an accident some years earlier, returns disillusioned from a harsh life in the big city to find his old countryside home half-swallowed by the sea. Left without a family, all he has to his name is the ship and submarine left to him by his oceanologist grandmother, and her debts.
His only hope to restore the dreams for the future that he has lost is to take up an opportunity presented to him by the suspicious debt collector Catherine. They set sail to search the sunken ruins of his grandmother's laboratory in order to find a treasure rumor says she left there. But what they find is not riches or jewels; it is a strange girl lying asleep in a coffin at the bottom of the sea. Atri.
Atri is a robot, but her appearance and her wealth of emotions would fool anyone into thinking she's a living, breathing human being. In gratitude for being salvaged, she makes a declaration to Natsuki: "I want to fulfill my master's final order. Until I do, I'll be your leg!"
In a little town slowly being enveloped by the ocean, an unforgettable summer is about to begin for this boy and this mysterious robot girl...

本作设定于海平面上升淹没了大量土地，威胁人类生存的世界。 主人公斑鸠夏生在8岁时因一场隧道事故失去右腿，在游戏开场时与就读的科学院老师产生矛盾而休学，移居到了已故祖母所居住的海边小镇与青梅竹马神白水菜萌重逢。 夏生在某天早上醒来时遇见一自称是讨债人的凯瑟琳，凯瑟琳要求夏生找到他已故祖母的遗产用以还债。