>>44833496Their aim with the UB's was to release them back into their Ultra Holes to go back home. Lusamine flat-out told Ash they couldn't find its entrance hole an to look after it. They reinforced the guardian aspect, rather than ownership, when they showed Poipole wanting to return to save its world.
Naganadel arrived back for two things - to show the anime world these UB's (Guzzlord/ Naganadel) and to fill out Ash's team for the battle with Kukui. It returned home after, as it has ALWAYS planned on staying in its world with UN and its colony. What WAS an actual cop-out was how he released Greninja at the end of XY, a bullshit reason, just to not have o bother with the asspull form again (I had to laugh when they showed him fighting off Mega pokémon like no big deal in Alola).
