MTALL-133 — I Disciplined The Brat Who Mocked Me For Being A Small Dick With My 20.7Cm Big Dick. Hinako Matsui

My nickname is "Deku no Bou" (small fry). I've always been called that because I'm just big and slow. Now that I'm older, my younger brother is married and has a successful family, but I'm unemployed... I feel so pathetic I could cry. One day, my younger brother and his wife were going on a trip, so I was asked to stay home alone. My brother's house has a damn cheeky niece, and the moment I met her, she started calling me a "small fry" and trying to dominate me. I wonder if I could endure living alone with my niece for three days with this brat...