1x24 - Clannad

In an alternative timeline where Tomoya and Tomoyo are dating, Tomoyo becomes student council president, but bad rumors start around the school due to Tomoya's bad reputation. Tomoyo becomes busy during the school festival, and continues to be so while she attempts to save the cherry blossom trees in town. A male student makes Tomoya realize that he is holding Tomoyo back from greater things, and despite both sides being reluctant, they break up. Time passes as Tomoyo's reputation builds and Tomoya and Youhei watch on the side through her many accomplishments, one of them being ultimately saving the cherry blossom trees by the winter. While on the way home after attending his high school graduation ceremony, Tomoya sees Tomoyo waiting for him along the road lined by the cherry trees. They talk for the first time in months. From Tomoya's view, his expectation is that their lives have diverged, never to come together again, but he is surprised when Tomoyo expresses her desire to be with him again. Tomoya tries to dissuade her from making that choice, but her mind is made up; she would rather be with him. Tomoya and Tomoyo become a couple again.