'Everyone needs to accept their own weakness.'
Everyone leaves Toru because he cannot protect everything he loves.
He then wears a fish jar to escape from the painful fact and create a brand new fantasy world.
He thought he could enjoy his own freedom with no pain and no worries ever after inside the jar...
But his fish jar will rupture every time when he feels pain and the exploring jar is fatal to him. His enemy will come to find him and destroy his own wonderland when that happens...