Inseparable Sword

Obtaining

 * Received at the end of D, Beholder of Death's questline in Deeproot Depths.

Trivia

 * The Inseparable Sword's EquipParamWeapon ID is in the 2000000 range, which is used for straight swords, as opposed to the expected 3000000 range. This combined with the above bug implies that it was originally designed and implemented as a straight sword, and was changed to a greatsword later.
 * Cut text entries show that the Inseparable Sword was originally able to have Ashes of War and affinities applied to it earlier in development.