When you walk into MexiHibachi, a new Mexican-Japanese fusion restaurant in Pinole, the first thing you notice is the giant mural on the wall: a stylized image of a samurai — full armor, katana held upright — facing off against an Aztec warrior. That’s just the first of many cultural collisions that grab the diner’s attention. There’s the endless loop of Karol G reggaeton music videos juxtaposed with traditional Japanese decor elements like red paper lanterns. There’s the name of the restaurant, “MexiHibachi,” painted in bold letters in the tricolor of the Mexican flag across the body of a flying...