I broke up with my cold and distant childhood friend girlfriend to make her understand my feelings, but she pleaded with me while crying, saying "I don't want to break up" and apologized. ~After that, my childhood friend started becoming clingy~

I'm Kuroya Koki. I have a childhood friend named Takamori Natsume. Takamori Natsume is an important girlfriend to me. However, for some reason, Natsume suddenly became cold toward me a year ago. Even when we meet on campus, she gives me a disgusted look, and even though we live in the same apartment building, she barely comes out of her room. Troubled by Natsume's attitude, my mischievous junior with a devilish charm, Tsujinaka Kanade, made me a proposal. "Break up with your girlfriend to make her understand." I was hesitant about this sudden proposal, but when I talked to Natsume, everything that had been building up inside me exploded. And so I tried to understand Natsume by giving her the cold shoulder in return and brought up breaking up, but... her reaction was the complete opposite of what I expected... This is a story where I'm pleaded with tearfully by my girlfriend, become sweet and affectionate, and get confessed to by my junior.