[DeepL Translation - needs review] My younger sister, Kirino Kosaka, is a brown-haired, pierced junior high school girl who is, if I do say so myself, quite beautiful. But she has no qualms about disrespecting me, her older brother, and I don't like her attitude, so we haven't had a proper conversation in years. I want to say out loud that there is nothing good about having a beautiful sister (at least for me)! But one day, I stepped on a huge landmine involving my sister's secret. I never t...
