Restaurant in Tokyo, Japan
Cross-category Chinese worth the detour to Koto.
O2 is a Michelin Plate Chinese restaurant in Koto City, Tokyo, where Chef Otsu applies Chinese technique and seasoning to Japanese and Western ingredients at an accessible ¥¥ price point. It holds a 4.3 Google rating across 237 reviews. Book if you want a personal, idiosyncratic kitchen rather than orthodox regional Chinese — and easy to secure a table.
If you want Chinese food in Tokyo and are prepared to spend at the ¥¥ price tier, O2 in Koto City is worth booking. The Michelin Plate recognition (2024) signals kitchen competence without the three-figure price tags that come with the city's starred tables. The real draw here is Chef Otsu's refusal to stay inside a single culinary lane: the menu presents as Chinese but pulls from Japanese and Western ingredients, anchored by Chinese technique and seasoning. That cross-pollination is the point. If you want orthodox Cantonese or Sichuan, book elsewhere. If you want a personal, idiosyncratic take on what Chinese cooking can do in Japan, this is a more interesting evening than almost anything in its price bracket.
The name itself sets the tone. 'O2' is read 'oh-two,' a riff on Chef Otsu's name that doubles as a kind of periodic-table joke. The bow tie and denim apron are part of the same self-aware playfulness. Walk in and the interior continues that thread: the room is deliberately expressive rather than neutral, the kind of space where the chef's personality has been allowed to escape the kitchen and colonise the dining room. For the explorer diner, that visual legibility is a useful signal — what you see is what you get on the plate, which is to say: considered, personal, and built around a clear point of view.
O2 sits in the Miyoshi neighbourhood of Koto City, not the obvious tourist or foodie corridor of central Tokyo. That location is part of why the Google rating of 4.3 across 237 reviews carries some weight — this audience is not passing trade. Diners who make it to a first-floor spot in a building in Koto are there on purpose. For the explorer who has already worked through the more central options, the neighbourhood itself becomes part of the appeal: a working visit to a part of the city that does not perform for visitors.
On the question of seasonal rotation , and this is where O2 rewards the diner who pays attention to timing , the kitchen's use of both Japanese and Western ingredients alongside Chinese technique means the menu is susceptible to Japan's ingredient calendar in a way that a purely Chinese restaurant in, say, Hong Kong would not be. Japanese produce is among the most seasonally distinct in the world, and a kitchen that uses it as a building block will change meaningfully across the year. Spring brings different raw materials than autumn; summer in Japan produces ingredients that winter does not. Without specific current menu data available, the practical advice is to check what season you are visiting in and treat that as a factor in your decision, because a kitchen operating with this kind of cross-cultural sourcing logic will be cooking differently in March than in October. If you have the option, late autumn is generally when Japanese produce calendars peak in terms of depth and variety, which should translate to a more complex plate.
For context on where O2 sits in Tokyo's broader Chinese dining offer, it is worth understanding that the city has a serious Chinese restaurant scene that spans orthodox regional cooking through to highly evolved fusion formats. Venues like Chugoku Hanten Fureika and Chugoku Hanten Kohakukyu (Amber Palace) operate at the formal end of Chinese dining in Tokyo, while Ippei Hanten and itsuka represent different points on the style spectrum. O2 is not competing with those rooms on formality or price. It is doing something more personal and less classifiable, which is either exactly what you want or a reason to choose one of the above depending on your brief for the evening.
At ¥¥, O2 is priced accessibly relative to the Michelin-recognised tier of Tokyo restaurants. The Plate recognition places it in a set of kitchens that Michelin considers worth flagging without awarding a star , a useful category for diners who want quality assurance without committing to a tasting menu price point. For curious diners who want to understand the breadth of what cross-cultural Chinese cooking looks like internationally, O2 makes an interesting companion piece to restaurants like Restaurant Tim Raue in Berlin or Mister Jiu's in San Francisco, both of which approach Chinese culinary frameworks from outside China in their own ways.
If your Japan trip extends beyond Tokyo, the country's broader range of personal, chef-driven dining is worth exploring: HAJIME in Osaka, Gion Sasaki in Kyoto, akordu in Nara, Goh in Fukuoka, 1000 in Yokohama, and 6 in Okinawa all reward the same kind of explorer appetite that O2 is built for. And for planning the rest of your Tokyo trip, see our full Tokyo restaurants guide, our full Tokyo hotels guide, our full Tokyo bars guide, our full Tokyo wineries guide, and our full Tokyo experiences guide.
At the ¥¥ price tier, O2 offers solid value for what it delivers: Michelin Plate-recognised cooking from Chef Otsu that consciously resists easy categorisation, blending Chinese technique with Japanese and Western ingredients. For mid-range Tokyo dining, that level of culinary ambition at this price point is hard to match in the neighbourhood. If you want straightforward regional Chinese, look elsewhere — this is a chef-driven project with a clear personal vision.
Specific dietary accommodation details are not confirmed in available venue data. Given that O2 uses a cross-cultural ingredient range spanning Chinese, Japanese, and Western sources, there is reasonable flexibility in the kitchen's repertoire — but check the venue's official channels before booking if allergies or restrictions are a concern, particularly since the menu format and any set-course structure are not publicly documented.
For higher-end Chinese-influenced or cross-cultural Japanese cooking with more formal credentials, Florilège and L'Effervescence operate in a similar creative-fusion space but at a significantly higher price tier. If you want to stay at ¥¥ and are flexible on cuisine, HOMMAGE covers French-Japanese territory at a comparable spend. O2 is the call if Chef Otsu's specific Chinese-technique-led approach is the draw.
Bar or counter seating details are not confirmed in the venue record. What is documented is a playful interior that reflects Chef Otsu's personality, so the space is unlikely to be formal or stiff — but whether walk-in counter spots exist cannot be stated without current booking data. Booking ahead is the safe approach given the Michelin Plate status and the fact that specific hours are not publicly listed.
Menu format details are not confirmed in the venue record, so committing to a tasting-menu verdict without that data would be misleading. What is clear is that Chef Otsu's cooking is conceptually driven — Chinese technique and seasoning applied to Japanese and Western ingredients — which typically suits a set-course format better than à la carte grazing. At ¥¥, the price ceiling limits the risk if the format doesn't land.
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