Sasha opened the door, walking in to find her father sitting on the couch, reading from a magazine. She blushed and closed the door behind her. The slight crinkling from her wet diaper was almost audible under her clothes. She had been wet since noon, but she knew the rules: she wasn't allowed to change herself, and had spent her afternoon in class trying not to focus on the swollen padding between her legs.

"Dad?" Sasha asked as she walked toward him. "I'm home." Her voice cracked with embarrassment, and she flushed in embarrassment. She took a seat beside him, taking his hand in hers and kissing it as a sign of her submission. His hands were so big; they dwarfed her own delicate little fingers.

"Hello, sweetheart," he said quietly. He looked up from his magazine and noted her blush. He grinned and pulled her hands to his lips. "How was class?"

"Great!" she replied quickly. It was always good to keep it positive around him. There was no need for guilt or shame if you just kept everything happy and positive. Besides, a happy Sasha meant a happy daddy. "It... it was great. We're covering some interesting things in biology..." She trailed off, looking down at their joined hands, which rested on his lap. She felt her father's penis through is pants, and her body responded in a visceral way. She felt her breathing quicken, her heart pounding. She felt her nipples erect under her shirt, and she was struck by just how very male he was. 

He was tall and broad, though his body had become flabbier as he aged. He still stood head and shoulders taller than her, with deep blue eyes and dark hair like her own. His features reminded her the central character from her favorite book.
She was only sixteen; barely old enough to be having these feelings. But it was natural to her, and it felt right.

Her father smiled at her and her heart skipped a beat. "Honey, spread your legs a bit, would you?" he asked softly. She complied immediately, opening her thighs wide. She knew what he wanted; it was simply a matter of letting him do it.

He cupped a hand under her skirt, feeling the swell of her diaper through her panties. He rubbed gently, the swollen padding pressing against her. "Looks like you couldn't hold it again today. I think it's time for a change."

Sasha nodded, trying desperately to suppress her smile. "Yes, sir. Please."

He kissed her forehead. "Of course, baby. Come along upstairs." He took her hand and lead her to his room, stripped her of her skirt and panties, and made her lie on the bed. She blushed furiously and looked anywhere but at him as he gathered the supplies for her change - a fresh diaper, wipes, and skin cream. She was used to the process now, but it was what came during that made her heart flutter.

He stripped off the wet padding and set it aside before wiping the wetness from her skin. She yelped softly at the cold wipes, but his touch thrilled her. He paid special attention to her pussy, rubbing up between her lower lips. He stroked over her clit repeatedly until she trembled and gasped.

When he finished cleaning her he moved to stand before her, unzipping his pants. She cooed softly, knowing what came next. It was their special routine and had been for a while now. She shifted closer to the edge of the bed, keeping her legs apart and bent, lifting her hips for him.

His cock sprung out, thick and hard. He reached down and lifted her small rear, lining himself up with her. He pushed slowly, inch after inch slipping inside. Sasha whimpered softly, then moaned as he began to thrust into her. He was large, but it seemed his size was just right, as if her body was made for his. He fucked Sasha gently, burying himself inside her as deep as he could.

"That's my good girl," he whispered, bending to kiss her. Her breasts shook with each thrust of his cock, and she blushed as her lips met his.
They continued for several minutes, Sasha enjoying every one of her father's movements as he filled her. Soon she saw him beginning to tense up and she leaned up to hug him, wrapping her legs around his waist. "It's okay, daddy... do it..." she breathed against his neck.

He did, groaning softly as he pushed deep inside of her with a trembling groan. She felt his thing pulse inside her, filling her in a way that fulfilled her with his warm seed. The union fulfilled some deep, primal part of her, and she sighed in contentment as she let the afterglow settle over her. 

She blushed, huffing softly as her father withdrew from her, wiping himself off on her. He quickly unfolded the fresh diaper and slid it under her. She was obedient, shifting as he pulled the padding up over her and taped it down tightly. He gave her padded mound a little pat once it was all finished, and she felt his seed leaking from her into the padding.

"Thank you, daddy..." she said softly, looking up at him with adoration.

"I love you, Sasha," he said as he sat down, pulling her into his lap and kissing her softly.