Ex-girlfriends chase after me, a guy who's been dumped twice.

When Akito Mizumori was in his third year of middle school, he fell in love with a girl who always read books in the library after school. That girl was Ayano Takahashi, who was slender, had shoulder-length hair, and wore glasses.

They entered the same high school and were in the same class for their first year. Akito thought their close relationship would continue even after entering high school, but Ayano became increasingly beautiful and started to attract attention from others. From that time on, Akito and Ayano had less and less time to see each other.

In their second year, Akito and Ayano were placed in different classes. At the beginning of the first semester, they still met as they had in their first year, but gradually Ayano started to avoid Akito.

One day, when Akito was on his way to a bookstore, he saw Ayano entering a hotel with Katsumi Shiraishi, a classmate of hers. He was so shocked that he skipped school the next day.

But his misfortune didn't end there.

When he returned to school the day after skipping, his middle school friend, Masanori Nakajima, approached him, concerned. Akito told Nakajima what he had seen on Sunday, and Nakajima, who was in the same class as Ayano, managed to get information about Ayano from his girlfriend, Kaoru Imaizumi. Shiraishi and Ayano were close in class, and they never mentioned Akito.

Akito decided to give up on Ayano. Ayano stopped coming to the library.

As Akito read books alone in the library, Saya Ichijo, a classmate, spoke to him.

They became close, studying and spending time together, and after summer break, they became intimate.

In their third year, Akito and Saya were in the same class, and Ayano was also in their class. It seemed she had broken up with Shiraishi, and she pressed Akito to get back together, but he refused.

However, Ayano used Shiraishi to forcibly take Saya away from him, and then used a video recorded at that time as blackmail to make Akito break off his relationship with Saya.

Akito, feeling he had been dumped again, focused solely on his studies, climbing to the top of his class and ranking within the top twenty in national mock exams.

With Saya separated from him, Ayano began to pursue Akito. However, with Shiraishi's arrest by the police, a new development awaited.