Complex sentence: Chou Soran was a normal college student until he gets caught up in a terrible incident in a small village, while visiting his grandfather's grave, he then told by officer Song that he met a girl saying that she was the other daughter of his father.
Split into simpler sentences: Chou Soran was a normal college student until he gets caught up in a terrible incident in a small village, while visiting his grandfather's grave. He is told by officer Song that he met a girl saying that she was the other daughter of his father.