元カノの姉と付き合っているんだけど、相性抜群で毎日が楽しい (Associated Names)

After dating for half a year, my girlfriend suddenly broke up with me. She said she was no longer sure if she liked me. She has stubborn determination and she didn’t even listen to me when I asked her to give me a chance. In the midst of my heartbreak after breaking up with her,…