一心对一护说：你出生之后的事 你都知道了，
没必要再说 但是有一件事你还不知道，
就是你妈妈死去那天发生的事 她死去的真正原因

Isshin tells Ichigo: You already know what happened after you were born,
so there's no need to say anymore. But there's one thing that you still do not know,
which is what happened on the day when your mother dies , the real reason that she dies.