By Mia GarciaSeptember 9, 2025 News Japan’s Legendary ‘Tuna King’ Launches His First U.S. Restaurant in the Heart of Koreatown Japan’s legendary “Tuna King” Masahiro Endo has opened his first U.S. restaurant in Koreatown, Los Angeles. Known for his masterful tuna cuts, Endo brings authentic Japanese sushi craftsmanship to the city’s vibrant food scene.