From Bulbanews, your community Pokémon newspaper.
Upgraded from Play Rough
Update: The move has been officially revealed in English.
Mimikyu's exclusive Z-Move, Let's Snuggle Forever (Bip-Bop Friend Time in Japanese), has been officially revealed. The move's English name has not been officially revealed.
Let's Snuggle Forever is a new Fairy-type Z-Move in Pokémon Ultra Sun and Ultra Moon. Mimikyu can only use it if it knows Play Rough and holds a Mimikium Z. While Play Rough can also be upgraded into Twinkle Tackle with a Fairium Z, Let's Snuggle Forever is more powerful than Twinkle Tackle.
Part of the animation of Mimikyu's Z-Move had been seen in previous trailers, and the Mimikium Z had been revealed earlier by merchandise.