[Super-cute POV & binaural recording] I have a cheeky little sister, Ichika. She’s always one-upping me in studying and love… “If your mock exam result is good, I’ll do anything for three days~? Stupid big bro! Loser~” Anything? The time has come to get back at this brat! I worked my butt off and finally made my sister my personal maid! Her underdeveloped body.
