Thread:Servant of Evillious/@comment-24324030-20141031123844/@comment-6192846-20141031131414

The Venom Sword was sealed, therefore the Demon of Lust was unable to return to its vessel without being trapped. Likewise, the mirror the demon was residing in was also sealed, making it impossible to depart from it or find a new vessel. It's not a contradiction.

Also, you are looking too deeply into it. It's not different than what happened with the Demon of Gluttony. It was put in one of the mirrors and resided there for a time. Unlike the Demon of Lust though, the Glass of Conchita wasn't sealed as well, allowing the user to recall the Demon from the mirror to its original vessel where it's true body lies.

There's no merging or anything like that being indicated. Also, because its unknown who has what vessel by Gift's time period, whether the Sword and/or mirror(s) are still sealed is unknown.