[Kuromahou Kenkyuujo (Nukaji)] I gave a time-stop app to my little brother who recently got interested in sexual stuff [CyIX]

A curious little brother armed with a 'Time Stopper' app freezes his big sister mid-step, leaving her helpless with her skirt hiked up and frilled panties exposed for his wandering hands. With the clock stopped, he takes his time exploring her plump young body—peeling her underwear aside, fingering her until something slimy tells him she's 'ready for sex'—before deciding it's time to put it in and pump a fresh nakadashi deep inside. A taboo sibling fantasy where a shota's first sexual discovery comes with total control, zero resistance, and all the time in the world.