Haruto Kirishima and Yuzuki Eba ride a bicycle through a dandelion field in Hiroshima as in the background he remarks that she was an unknown person at the time he met her, never having met her before or talked to her as well. Eventually, she jumps off the bicycle, fading into the background prompting Haruto to stop pedaling as he looks on noting that she left unforgettable memories when she left.

Haruto thinks back on how he and Yuzuki first met and the time they shared together back in Hiroshima. Source: crunchyroll

A school festival gives Haruto the opportunity to meet Yuzuki face-to-face for the first time since he`s arrived in Tokyo. Source: crunchyroll

Just as the bonds of friendship begin to grow between Kazama and Haruto, a startling development threatens to ruin it. Source: crunchyroll

When Haruto and Yuzuki were still together in Hiroshima, he learns that they`d actually first met when they were children. Source: crunchyroll

Haruto learns the truth about Yuzuki`s departure and her relationship with Kazama. Knowing this, he resolves to try and win her back. Source: crunchyroll

A risky surgery could save Kazama`s life and offers him a chance to compete with Haruto on an even playing field, but will he go through with it despite the low chance of success? Source: crunchyroll

A year and a half has passed and Haruto has moved on and is dating his friend Asuka, but a chance encounter with Yuzuki causes familiar feelings to stir within him. Source: crunchyroll

Rin mischievously sets Haruto and Yuzuki up on a date the amusement park. Haruto`s recent strange behavior causes his girlfriend Asuka to worry about their relationship. Source: crunchyroll

Due to an injury in her family, Asuka is forced to cancel her trip with Haruto. Haruto decides to go back to Hiroshima to visit his friends and ends up reconnecting with Yuzuki. Source: crunchyroll

Yuzuki and Haruto relive their childhood memories together by attending the summer festival. Reluctantly, Yuzuki confesses her true feelings to Haruto. Source: crunchyroll

Haruto is torn. He finally realizes who he`s in love with, but the thought of having to break someone`s heart in the process torments him. Source: crunchyroll