Board Thread:Questions and Answers/@comment-75.18.255.142-20140613090548/@comment-75.18.255.142-20141014034752

The same things applies for Kanade being in the afterlife long before Yuzuru even though he died before Kanade. This is already a paradox itself in the afterlife so the same can be applied in the living world with Kanade and Hatsune.

The fact of Hatsune and Kanade living in the same time while having the same soul is not impossible because a similar series called Air uses the same concept and idea. Also there is the involvement of supernatural elements which means anything is possible such as how the SSS can make weapons out of dirt meaning logic and science are irrelevant. Like Yuri said you should try to accept things as they are. Trying to explain it will only hurt your head.

... and now my nose is bleeding.