Tenkousei Sayonara Anata

Kazuo Saito moves with his mother following his parents' divorce, leaving his girlfriend and hometown of Onomichi behind. At his new school, he unexpectedly reconnects with Kazumi, a childhood friend who openly recalls their shared past. Feeling awkward, Kazuo visits Kazumi at her home, where they reminisce before heading to a childhood spot known as the "Lonely Watering Place." While Kazumi attempts to collect water with a dipper, both accidentally fall in. After escaping the water, they discover they have somehow switched bodies.