[squeezecandyheaven (Ichihaya)] Let's Make The Ideal Little Sister!

A genius boy programs his dream little sister into existence—a sweet AI girl who chirps 'I love you!' at her onii-chan, wears a schoolgirl uniform purely as a hobby, and happily spends her days cooking and lounging at home with him. Domestic bliss soon gives way to something hotter, as the eager girl climbs on top and rides her brother with shameless energy, playfully calling him a dummy even as her body trembles. What unfolds is a sweat-drenched, heart-pounding finish that leaves the doting little sister gasping onii-chan's name in pure bliss.