Okama Ramen and Grill in Chula Vista's Otay Ranch Millenia district is a women-owned, Asian-owned Japanese restaurant combining ramen, sushi, and teppanyaki-style hibachi under one roof. Tonkotsu bowls anchor the ramen program with four base variations — classic, spicy, black-garlic, and spicy miso — each built on a slow-simmered pork-bone broth topped with chashu, soft-boiled egg, and bamboo shoots, a multi-format approach shared with the fusion-driven SeaTaco in the same corridor. The hibachi menu fires chicken, salmon, and steak on a flat-top grill with sauteed vegetables and garlic butter, extending the kitchen's reach beyond noodle and raw-fish diners. A dedicated Vegan Black Miso Ramen and vegan roll options target the plant-based segment of the Chula Vista sushi market, tapping the same health-oriented consumer base that shops at Tus Chefs Favoritas for specialty baked goods. The Filet Mignon Ramen tops the menu at the highest price point, layering seared steak over pork or chicken broth with asparagus, soft-boiled egg, and wood-ear mushrooms in the kitchen's most premium single-bowl format.