M.A./Shiori/The cock sleeve.
From Create Your Own Story
You run it under hot water from the sink to warm it up as you stroked lube on your cock. It was enough to make you moan, so you pulled your shirt up between your teeth. your large breasts hung heavy from their own weight, but still had a youthful perkyness to them. With the toy and your cock ready, you jump into the shower and leaned back against the wall. The warm, wet toy slides easily down your cock as the various bumps, ridges, and textures within stimulated your shaft. Slowly at first, soon you felt your nuts slapping between your thighs with a fap-fap-fap.
You fondle one of your breasts as you stroke your dick, the tip of it poking out the opposite end. The stimulation was enough to get your thighs trembling as you throw your head back and moan. It was muffled through your shirt, but the high-pitched squeal of pleasure was a bit too audible for your comfort. You slowed down a moment to make sure Shiori didn't hear before continuing.
You start to get out of breath and start panting, letting your shirt fall from your teeth. You could feel your nuts churning, your cock swelling, your orgasm approaching quickly. So you pumped harder, teasing your nipple with your free hand as you moaned freely. You clench your teeth together to try and shut out the final moans as your cock explodes, painting the inside of your toy and the shower wall opposite of you with pearly white cum. You didn't stop pumping, splattering some cum on your hand and thighs. Once you finally come down from your orgasm, you slowly pull the toy off your dick. Your shaft started to sag immediately, though the tip was still throbbing and leaking cum. As you stand there panting, you finally re-gain some of your situational awareness.
M.A./Shiori/You see Shiori standing in the doorway. She doesn't seem to know how to react, other than stare with her mouth open.
M.A./Shiori/You catch Shiori peeking in through the door. The door shut almost immediately.
M.A./Shiori/You hear a snickering behind the door. She definitely heard.