Anxious

Isabella giggled lightly as she pressed her lips against Nathan's ear before softly whispering; "There's no need to be anxious around me Nathan, I'm still me but just an improved version is all." Nathan took in his sister's words but was still notably worried as she eased her lips away and spun around to look him in the eye. Isabella placed a hand on her hip before parting her plump lips to mewl; "Don't be silly Nathan, I'm sure if you had a little drink you'd either be a raving stud like Daddy or a submissive Sissiboi like Michelle here.

Nathan's eyes widened in shock as he noticed the leash his sister held in her delicate hand. Isabella gave it a small sharp yank to summon the aptly named Michelle. Casting his eyes downward Nathan was surprised by the sight of a blonde-haired Sissiboi with a leather collar around their neck. The Sissiboi's ample breasts jostled from side to side as their fully erect cock coated the ground with streams of their infectious seed. Isabella grinned as Michelle eased herself up next to her before looking at Nathan.

It took Nathan a few moments to recognise the busty Sissiboi harlot was in fact Isabella's partner Mike. Nathan had always thought of him as a very masculine guy but it seemed it was just a shell for the raging Sissy within. Isabella giggled softly as she watched her brother's reaction before parting her sensual lips to mewl; "Don't look so worried Nathan it only took Michelle a few torturous moments to become the Sissiboi she was meant to be, I'm sure it will take you even less."

A chill ran down Nathan's spine as Melissa sidled up next to him and whispered into his ear; "Melissa would love to meet Natalie, I bet she's a wild slut." Nathan shuddered with a mix of arousal and fear as Melissa helped him down to his knees. Looking upward he saw the head of his sister's gargantuan cock peek out from beneath its latex sheath.

Isabella's lips curled into a mischievous grin as she dropped them a sultry wink before aiming her cock at Melissa's eager face and Nathan's panicked features. Melissa giggled as she mewled; "Mistress is the best Natalie, I'm sure you'll be an eager Sissiboi slut in no time." Nathan took a deep breath as he...