This is the broken sword that the leader of the Seven Deadly Sin has carried since the begining of the manga. We know as of chapter 27 that this is not his Sacred Weapon but he does use this for his Full Counter ability and it also seems to have some illusionary magic abilities.
How do you think he came to possess this weapon and why do you think he values it so much?
How do you think he came to possess this weapon and why do you think he values it so much?