Byleth and Catherine hurried their way to the archbishop's quarters, hoping to help Rhea through this mess she'd gotten into. Seteth stood outside the doorway, a stern expression on his face.

"I'm sorry to trouble you both and Shamir, but I've no idea what else to do. I haven't cared for a baby in years, not since Flayn was small. I figured since Byleth runs that club, and you two have been handling her well during this punishment, that all three of you can help Lady Rhea through this time." Seteth reached into his pocket, produced a handkerchief, and wiped the sweat from his brow.

Catherine smiled. "Not a problem, Seteth. Any time Lady Rhea needs help, I'll always be there to do so. Let's see how she's doing and then take a look at the device she used."

Seteth opened the door and Catherine followed suit with Byleth tagging along behind. Shamir was standing over Rhea on the floor, naked except for a thick pink diaper covered with princess and unicorn designs. She stopped when she noticed her new visitors and waved excitedly. "Hi hi!" Rhea said. She began to babble incoherently.

"So her mind really is that of a baby's?" Catherine asked.

Seteth swallowed. "Yes, as far as I can tell. Luckily, she already had a diaper on under her robes. I know she enjoys the sort of play you all conduct on occasion, but I've never seen her like this. I suspected this odd device I found was to blame." He held up a small gray box with a few unlabeled buttons.

Shamir frowned. "I'll take a look. Catherine and Byleth, you play with Rhea a bit while we figure out what's going on."

Catherine picked up Byleth and set her down on the floor. "Look Rhea, it's Byleth! I think she wants to play with you."

Rhea hugged Byleth tightly. "Yay, Bylef's here! She's my bestest fwiend evuh!"

Byleth smiled. "What do you wanna play Rhea?"

Rhea didn't answer, instead grabbing a large teddy bear from the corner and laying it down flat on its back. Rhea straddled the large teddy, and began to hump it with vigor. She began to moan softly as Catherine dashed over.

"Lady Rhea, no! Baby girls don't need to play like that!" Catherine said as she hoisted Rhea off of the poor teddy.

Rhea began to pout. "But Momma Cafwin! My cunny is tingling!"

Catherine shook her head. "I know baby, but you need to talk to a Mommy when something like that happens."

Byleth paused for a moment. "Wait, if she feels like that, then the regression must be more complex than just making Rhea a big baby. She's still feeling sexual pleasure, so it's more like she's just babified in what she does and how she talks. I wonder how the device works…"

Seteth dashed over. "Actually, as it turns out, this remote isn't for a babying device, I was wrong. Shamir has just informed me that…"

Shamir chimed in. "It's for a vibrator. We have a similar one at home. It's probably a bullet vibe, so if she had it inserted when she was regressed, it would make her experience vibrations. As it turns out, Seteth kept cranking up the vibrations, and that's why she so suddenly had the urge to hump that poor teddy bear."

Catherine nodded. "That makes almost too much sense. But who on earth would do such a thing to Lady Rhea, and how?"

Rhea looked up and pointed towards the door of the office. "Big sissy Connie! Mommy Hapi!" Sure enough, Constance von Nuvelle and Hapi were just about to sneak through the office's front door.

Shamir snapped her fingers. "You two, come here, I want to talk with you. Catherine, help Rhea get dressed."

Constance began to sweat nervously. "Well hello madam! Are you one of the Knights we hear so much about in Abyss? You are quite the beauty, and you also look quite strong, if I may say so."

Shamir shook her head. "Not a Knight, but I'm dating one and I work for Rhea. More importantly, did you kids have anything to do with what happened to Lady Rhea?"

Constance flashed a smile that fooled no one. "Um… well funny thing is…"

Hapi held a finger to Constance's lips. "Lying gets us nowhere, Coco, I'll talk. Coco and I were going out to shop for supplies, but we couldn't get some of the things we wanted in Abyss. Coco suggested going to the surface, but we usually need clearance from Aelfric or Rhea. Aelfric was busy, so Coco just decided to go."

Constance cleared her throat. "Long story short, we got caught, Rhea took us to her office to lecture us, and I just… cast a spell on Rhea, that made her act like a baby. We stripped her clothes off to put her in a diaper, then snuck back out and did our shopping. We were going to fix it, but then we saw you all here and decided to come back later. And now you've caught us trying to leave, and that's pretty much everything."

Seteth's eyes began to burn with fury. "I appreciate your honesty. Constance, fix this spell at once."

Constance produced a wand from her pocket and waved it carefully. "Not an idiot, not a dolt, turn this big baby, back into an adult!" she said, and a glowing beam hit Rhea.

Hapi tutted. "Seriously Coco? You know you don't need to recite stupid rhymes every time you do magic outside of combat, right?"

Constance was trying to think of some retort when Rhea stretched . "Ugh, my head feels…terrible… and I'm quite cold. Why am I naked, save a diaper?"

Seteth cleared his throat. "When you caught Hapi and Constance trying to sneak out of Abyss without clearance from you or Aelfric, they used a spell on you to regress your mind to that of an infant. Though it seems it was not perfect, as even regressed you were able to point out the perpetrators, which helped us to reverse things. What shall we do with them?"

Rhea stood. "Tell me my children, what was it that you wished to purchase so badly that you'd brainwash the archbishop just to obtain it?"

Constance stammered. "W-well, it's a bit embarrassing…"

Rhea smiled. "Ah, but so is standing here naked except for a pink princess diaper. Come child, there is little I have not heard of or seen."

Constance swallowed hard then produced a paper sack. She turned it over, and even Rhea giggled at the contents with in.

Constance and Hapi had bought two pacifiers, two bottles, two bibs, some baby toys, a few enemas, and a big box of unicorn printed diapers.

Rhea covered her mouth, trying in vain to stifle her laughter. "Oh, my children, didn't you hear? We have a club for big babies like you two, and we'd have gladly helped you make your purchases and extended an invitation if you'd have asked."

Hapi smiled. "So… we're not in trouble, right?"

Rhea shook her head. "No, you two will still receive punishment at the hands of Catherine and Shamir. I think they know what to do."

Catherine smiled. "I sure do."

Shamir smiled. "Of course. Lady Rhea, if you wouldn't mind, could you mess your diaper? I'd like to give Constance a little extra punishment. Don't worry, Byleth can help you clean up and get dressed."

Rhea grinned as she squatted down. Biting her lip, she began to mess her diaper. An ugly brown bulge stained the pink diaper.

"Good girl." Shamir said with a smile, and Byleth lead Rhea to a side room to be changed.

Catherine smiled as she beckoned Hapi over to her. "I'm not asking you little one, I'm telling you, get your little booty over here so Mommy Catherine can prep you for your little punishment."

Hapi complied though she shuffled her feet slowly to do so.

Catherine opened up the package of diapers the girls had brought, and laid one underneath Hapi. She then reached into the bag and grabbed an enema bulb, pouring a fair amount of mineral oil into it.

Shamir smiled. "Honey, I like the way you think."

Byleth reappeared with Rhea's stinky diaper in hand. "Here you are Shamir, fresh from the archbishop herself."

Shamir nodded. "Thank you, Professor Byleth. Constance, do you know why I am giving you an extra dose of punishment?

Constance gulped. "Because I was the one who convinced Hapi to break the rules, and babified Rhea?"

Shamir flashed a wicked grin. "Good girl. Or rather, bad girl." Shamir slid the archbishop's soiled diaper beneath Constance's rear.

Constance squirmed. "Ugh, how disgusting! This does not suit a Nuvelle!"

Shamir popped a paci in Constance's mouth. "Hush little one, no talking."

Next, Shamir grabbed an enema bulb and carefully inserted it into Constance's ass. All Constance could do was babble uselessly behind her paci as Shamir squeezed the bulb and flooded Constance's rear end with mineral oil. Catherine did the same with her bulb, flooding Hapi's ass with the liquid.

Next, Catherine and Shamir taped both of their new babies into their diapers. Byleth giggled at the adorable sight.

Shamir motioned Byleth over. "Here's a pull-up. As far as Catherine and I are concerned, you're off the hook. Just keep in diapers and pull-ups until the week is out, because we'll randomly check you and if you're wearing panties, you'll be joining Miss Nuvelle and Miss Hapi again, understood?"

Byleth nodded.

Shamir smiled and kissed her forehead. "We'll help out at the club anytime, and we're always happy to mommy you. Why don't you go back to the club for a while?"

Byleth nodded as she tucked the pull-up into her pocket. She went down the stairs and walked past the Officer's Academy to the clubhouse. She entered, but instead of seeing a large group, Felix was there, alone.

"Felix! Did everyone leave already?" Byleth asked.

Felix nodded. "Yeah, Manuela had them leave shortly after you three did. I stayed to clean up a bit. Speaking of, that pull-up in your pocket is better suited to being put on the changing table; you're much too little for a pull-up."

Byleth felt her face flush. "Yes, Daddy Felix."

Felix came over to Byleth and snatched the pullup out of her hands. He leaned in and kissed her tenderly on the lips. Byleth returned the favor, kissing with a passion that she'd only had with Edelgard before.

Felix smiled. "Perhaps we should take this to one of the side rooms?"

Byleth nodded. "Not a bad idea."

There was a knock on the door, and Edelgard came in.

"Well hello, you two," Edelgard said, "Mind if I join you?"

Byleth smiled. "That sounds lovely."

Thankfully the soundproofing had been soundly completed this time, for Edelgard and Byleth both moaned loud enough that they would have been heard in Enbarr.