This is how a thousand-year-old festival ends. The Tenjin Matsuri, one of the three greatest festivals in Japan, honors Sugawara no Michizane, the deified scholar—a god of learning whom students still petition before their exams. After two days of processions, the celebration culminates in fire above the Okawa River. What makes the night unforgettable is the convergence of elements. A hundred boats, lit with bonfires, move slowly along the dark water in the funa-togyo, the river procession, while overhead the fireworks open and rain down. Flame on the boats, fire in the sky, and the doubled light of both spilling across the current. Osaka in summer is a city of heat and appetite and noise, and here, on the river, all of it gathers into something close to transcendence. Watch for the kobai shells—fireworks shaped like plum blossoms, the flower associated with Michizane, who loved the plum so fiercely that legend says one tree flew across the country to follow him into exile. They bloom only at this festival. The fireworks come on the evening of July 25, along the Okawa near Sakuranomiya, where the banks fill hours in advance and the crowds are enormous—and worth enduring, for to stand there once with the boats sliding past beneath the doubled fire is to understand why Osaka has always called itself a city of water. A thousand years of devotion, opening pink against the night above a working city's river, the prayer and the party indistinguishable, exactly as they have always been.