恋風 (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: --From today, I'm your "big brother" again. I knew I had a younger sister, I didn't really feel it, I just knew... I broke up with my girlfriend of two years and was feeling kind of down, and then I met her. The blur of my breakup with my girlfriend was blown away by the blunder I showed my sister. Everyone calls me "big brother" ....... What is a sister? Motoi Yoshida's masterpiece love story is now published in a new edition!

(Translator: DeepL)