Try out the maid persona on Miia.

"Hmm, what shall we do next?" Kimihito mused as he watched Miiabot dusting Cerea with Papi. "...you know, this task would be more suitable for a maid..."

"Indeed, thou are correct, Master," Cerea giggled, still oblivious to her nudity as Miia kept dusting her.

"Miia, Alter Ego, Maid," Kimihito said with authority.

Miia blinked, before looking down at herself. "Eeek!" she yelped, setting Papi down to cover her breasts and pussy. "M-Master, why am I naked?" Miia asked, her maid persona much more shy about sexual activity than normal.

"Beats me," Kimihito grinned, giving a shrug. "I don't see why that should stop you from completing the task you were given. Keep going."

Miia went deep red, but all the same, picked up Papi again, and continued dusting Cerea, who lifted her arms up to put behind her head to give Miia easier access to her breasts. "Apologies for my garment being in the way," Cerea told Miia through her giggles at the dusting, oblivious to her nudity with the Unaware aspect of her trigger.

Miia blinked and looked at Cerea, before asking, "What garment?"

Cerea blinked, her attention now drawn to her nudity. She yelped, and was about to move to cover herself, before Kimihito cut in, "Cerea, freeze, body from the neck down."

Naturally, Cerea froze before she even did more than start to move, preserving her pose, only her head still free. "Master, this is so embarrassing..." Cerea whined a bit, prompting Kimihito to chuckle as Miia kept going.