"Kamui, can you come here, please?" Camilla called out from her room, in a questioning tone.

"Of course, nee-san." Kamui walked through the open door of his big sister's room and froze, looking at the curacevous half-naked purple woman standing in front of a mirror. "N-nee-san? W-Why are you-?"

"Stop gawking and tell me something," Camilla replied, with a hint of annoyance in her tone. "Do you think I've gaining some weight lately?"

"I-I wouldn't know." Kamui shook his head, trying not to look at Camilla's big breasts and wide hips.

"Kamui, stop being silly and tell me. I won't get mad." The older woman huffed.

"...I think your stomach is getting on the flabby side?"

Camilla flinched at those words as she poked at her soft, doughy tummy. "R-Really?"

"Yes, I think so. It's definitely on the flabby side..." Kamui nodded a bit.

"Oh, no!" Camilla sank to the floor, hands covering her face. "Gods, I can't believe this! I'm turning into a slob!"

"Camilla-nee-"

"Go away, Kamui! I don't want you to see your big sister like this! I'm becoming an ugly duckling!" The purple-haired woman sobbed, facing the corner and away from the mirror and her brother. "I'm nothing more than a messy blob!"

"You're wrong, nee-san!" The younger brother went up to his sister and hugged her. "Y-You're beautiful! You're a vision of loveliness! You're the envy of every girl in Nohr! Why, artists would love to paint you in their works!"

"Oh, stop it, Kamui. I'm an old crone, and you and I both know it." Camilla sniffled.

"I'm serious! You're not like the other women I've seen! Y-Y-You have pride! You have grace! Y-You're a work of art in motion!" Kamui's voice rose up every time he spoke, passion flowing into him like liquid fire. "If I weren't your brother, I'd marry you!"

Camilla rose her head up at that and turned to Kamui. "R-Really?"

"Y-Yes!" Kamui looked into her eyes deeply. "I love you, nee-san. No matter what you are or what you'll be." He then placed his lips onto hers, kissing her. After a while, he broke the kiss and let out a gasp. "Oh, gods... I-I'm sorry, Camilla-nee-san. I-I just got caught up in the moment."

"Oh, Kamui..." Camilla then wrapped him up in a big hug. "You don't have to apologize... I love you too." She then kissed him back, a blush appearing on Kamui's face. The purple-haired woman broke up the kiss and smiled at him. "So, tell me more about how pretty I am~"

"You're the best big sister I've ever had."

"Even better than that Hinoka woman?"

"...Yes."

Camilla smiled and stood up. "I'm happy to hear that, Kamui." She then began to remove her panties and flung them into a corner. "I want you, little brother, to prove your words to me. I want you inside of me."

"Y-You mean...?"

She nodded. "Yes, I mean that. Take that thing of yours and put it inside of me." Camilla then climbed onto her bed and spread her legs open in an inviting pose for her brother. "Come to me..."

Without any need for provocation, Kamui quickly dropped his pants and flung them to a corner, climbed up the bed, and grabbed his sister's love handles as he aimed his erection at his sister's pussy. "Gods, I've wanted to do this!" He breathed out as he slid his manhood into his sister's love hole, causing her to let out a wailing moan.

"Kamui...!" Camilla gasped huskily, feeling her brother's cock twitching in her pussy. "You're so big and thick!"

The younger prince didn't answer as he pounded away inside of his voluptuous sister, her breasts bouncing rhythmically from each thrust as his balls smacked against her buttocks. "This is the best pussy I've ever had!" He growled hungrily. "And it's all mine!"

"Ahhh...!" Camilla felt her eyes go back into her head as she stuck out her tongue, her mind being overwhelmed by her brother pounding her pussy and the intense pleasure she was receiving. "Gaaaah...!"

"Nee-san... I'm gonna cum! I'm cumming! DAAAAAH!" Kamui then blew his load into his sister's vagina, filling her womb up with his seed. "Gods, that was amazing..."

"Kamuii..." Camilla moaned dizzily, stretching her arms out towards him. "Come give me a kiss..."

The younger prince then laid his body on top of his sister and they both kissed one another, their tongues dancing around together in joy. After a minute passed, they broke the kiss and looked at each other.

"I love you, nee-san."

"And I love you, Kamui."

The two siblings then fell into a comfortable sleep on the bed, still in each other's arms.