User blog comment:Godisme/Rain as a Blade/@comment-1268838-20111013002033

Tsukishima's ability makes sense; after all, the huge, early revelation of this arc was that all objects, not just living beings, possess souls. That is the very basis of Fullbring. So it follows that Book of the End should be able to work on both. Now, the extent to which it works is another story. When he uses it on a person, he can reconstitute their memories to insert his presence, but for objects, it seems that he can alter their structure on demand. I really like this ability, as it makes Tsukishima a truly frightful opponent, as opposed to the cannon fodder everybody thought he would be against Byakuya. Book of the End is definitely 2nd on my list of cheapest abilities.