When somebody says they like part 5 better than part 4

Araki did a manga spin-off of DIU called "Dead Man's Questions" about Kira's further adventures as an amnesiac ghost who works for a female monk who orders them to kill undesirable people, Kira loses Killer Queen but is still a cold blood killer

This version of Kira appears in Eyes of Heaven

And finally, Diavolo seems to be in the Eternal Life/Death Loop GER trapped him into at the end of Vento Aureo