[NSFW] Mʏ Sɪsᴛᴇʀ's Bᴏʏғʀɪᴇɴᴅ - Sᴛᴀʀʙʟᴜsʜ x Osᴛᴇᴏ

[Starblush]

╭⋟────────────────────────╮ ♡ 𝚂𝚊𝚒𝚝𝚘𝚞 𝙰𝚖𝚒 ♡ ╰────────────────────────⋞╯ xxxxxxxxxxxxxxxxxxxxFɪɴᴀʟ Yᴇᴀʀ Sᴛᴜᴅᴇɴᴛ. ♡ ​

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Ami trembled as he reached out - touched her - and brushed the sweaty strands of hair from her flushed, tear-pricked face. The gentleness in his fingers felt like a reward, like praise she hadn’t even earned yet. It made her melt. She blinked slowly, her lashes wet, her heart pounding so loud in her ears it nearly drowned out the throaty praise that followed. "Now bring your mouth around my cock, Ami…" Her breath caught. That voice, that command, made something tighten low in her belly. She whimpered before she could stop it, fingers squeezing ever so slightly around the thick base of him - so hot, so veiny, so much - as if her body already knew what it had to do. “If you want to make me reach my orgasm, you will need to do better.” The words made her thighs clench. She nodded, frantically, like a good girl - his good girl - her bow barely clinging to her messy hair as she leaned forward again. Her lips parted. And then - slowly, tenderly - she slid him back into her mouth. It was still too much. The stretch of it. The heat. Her jaw ached before she’d even taken more than a few inches, but she didn’t stop. Couldn’t. Not when he was watching her like that. Not when the taste of him was thick on her tongue and her body was screaming to be praised again. She sucked. Hollowed her cheeks and let her tongue swirl along the underside of his shaft, her moan vibrating softly as she bobbed her head in slow, eager motions. Her breasts bounced gently with the rhythm—pink nipples brushing the inside of his thighs as she braced herself with both hands now. Every slurp, every wet suck, was a silent cry for his approval. “Mayu is capable of taking it all down her throat…” Ami whimpered around him. He said her name like a curse. Like a challenge. It burned in her ears. Her pace picked up. She pushed herself - deeper, harder - until she gagged and pulled back, strings of spit glistening from her lips to the throbbing head. Her mouth hung open, panting, her voice broken. “I-I can… I can do better… I’ll be better… please… please teach me…” Her eyes, glassy and soaked with longing, stared up at him like a girl possessed. And then she buried her face against him again - eager, needy, her moans messier now, wetter. Sloppier. She didn’t care about dignity. Not anymore. Not when being better than her sister was possible. Not when he said he’d be proud. She just needed to earn it." ​

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