Before warping to Celestia to sort out matters with Seraph Lamington, King Laharl gets a spiritual lesson on love during a Prinny ritual. Everyone watches in awe, as redeemed souls shed their penguin bodies and escape enslavement.
Please, let them go. 
They have atoned for their sins.
.أرجوك دعهم يذهبون
.فقد كفروا عن خطاياهم