Tokyo is the south-side destination — 4825 South Louise, in the corridor where the city's chain restaurants and bigger-format dining live. It is not a replacement for Oshima. It's a different mission. If Oshima is the small downtown two-top with cold sake and the back-wall booth, Tokyo is the bright family-friendly hibachi room with the chef who flips the shrimp into your kid's mouth. Both are necessary. Both are excellent at what they do. They belong on different nights.
The orders. Big rolls — the Philadelphia, the shrimp tempura, the crazy mango. The crazy mango is the gateway roll, the one I'd send a sushi-curious friend to first. Tuna tataki when you want something a little more serious. Spicy edamame as the table starter, every single time. If your group includes anyone who's never done hibachi, the hibachi is the thing — get the chef station, order the combination dinner, and let the show happen. The food is solid. The show is the entertainment. The hibachi is what gives Tokyo its identity in the city.
Mon–Thu buy-two-rolls-get-one-free is the value play. If your group is splitting four rolls, you're effectively eating one for free, and that math compounds when you've got a sushi-and-hibachi mixed table where one half is rolling and the other half is watching the chef. Thursday dinner with friends is the move.
Hours are wide open. Daily 11 AM to 10 PM, Sundays until 9. The Sunday hours matter. Most of the Asian rooms in Sioux Falls are closed Sundays — Oshima, the Pho Thai trio, Phnom Penh, Dynasty, several others. Tokyo's Sunday hours fill the gap. If you want sushi or hibachi on a Sunday in this city, this is the answer.
The room is bright, big, and family-coded. There's a kids menu, which is the polite way of saying they expect children, which is also the right setup for the hibachi format. The booths are big, the tables turn fast, the energy is closer to a chain steakhouse than to Oshima's quiet. That's a feature for the missions Tokyo is built for and a bug for the ones it isn't. Do not bring a first date here. Do bring your in-laws. Do bring the family birthday dinner where five generations are in attendance and someone has to like everything.
Parking is easy — the lot is big, lit, and not metered. South Louise is a five-lane corridor, so plan the turn-in coming from the south side; the median doesn't always cooperate from the north.
For takeout, Tokyo's to-go is fine but it loses the hibachi entirely (which is the point of going), and the rolls travel about as well as any sushi rolls travel — that is, not great. If you're getting takeout, get the rolls and the bento and skip the cooked-on-the-grill stuff. The Mon–Thu buy-two-get-one-free runs on takeout too.
Reservations are taken and recommended for parties of four or more, especially for the hibachi tables, especially on weekend evenings. The chef stations seat eight. If your group is six or fewer, you'll either share a table with strangers (which is sometimes fun) or wait for a private station to open up. Call ahead.
Card, cash, the usual. The website at tokyojapanesesd.com has the menu and the lunch specials. The phone is (605) 274-1688.
Compared to Oshima: Tokyo is bigger, brighter, more focused on the family-and-event use case. Sushi is solid, not transcendent. Hibachi is the differentiator. Volume of sushi reviews is similar to Oshima (795 vs 1,081), which tells you the city has supported two real Japanese rooms for a long time, and they have correctly carved out non-overlapping territory. You don't need to choose. You need to know which one fits the night.
Compared to Fancy Bowl (the downtown poke counter): Tokyo is sit-down, not fast-casual. Different category, same broad cuisine. Fancy Bowl when you want lunch in twenty minutes. Tokyo when you want dinner in two hours.
If you have eight people, kids included, and you need one restaurant to handle them all — Tokyo. If you have one person and you want an hour of quiet — go elsewhere. If a Sunday hits and you need sushi — Tokyo, the only one open.