Time Hollow ～奪われた過去を求めて～

Life is full of regrets...if only we had the power to change the past.

Ethan is a perfectly ordinary high school student who lives with his parents. The day before he turns 17, he has a strange dream... when he awakes he is separated from his parents, but in possession of a device that can control time.

[from the back of the box of the european release of Time Hollow]