“This city works too hard”, claimed the young man. Sitting in a smoky kissaten in Kōenji, he explained to us why he’d enjoyed living overseas so much. Tokyo works famously to its limits, and it became a theme during our recent research trip, recurring in conversations with friends and strangers. Six-day working weeks, hours that stretch late into the night, and staggered office departures still prevail, we would hear.

What I also noticed, though, was the city’s equally enduring knack for decompression after a day’s work. Each evening, noren curtains appear in doorways and izakaya lanterns flicker on. Groups of coworkers gather in refuge, shoulder-to-shoulder with ties loosened, at these informal dining spots. Tokyo, tightly wound as it is, knows how to unwind like few other cities.

An izakaya’s unpretentious ambience is, in part, down to its layered interior: handwritten menus pinned to the wall, Shōwa-era beer adverts, and aged wooden surfaces piled with crockery. Amid the scene, crates flipped upside down and placed on the ground, topped by thin cushions just comfortable enough to sit on, are transformed into seating. The same containers, modular in their nature, might also become improvised tables. It is the ubiquitous P-bako (P箱), short for plastic hako, or box, Japan’s distinctive and uniform beer crate design.

Primarily, P-bako belong to the city’s logistics network. Colouring daytime Tokyo with bright blocks of Kirin yellow, Sapporo red, and Suntory green, you’ll find them at rest on almost every back alley. Typically, they carry up to 24 reusable glass bottles waiting to be unloaded, cleaned or reused. Transported between breweries, distributors and restaurants via a deposit system, their circulation is almost constant. Only as evening looms does their cultural second life begin.

Until 1960, Japanese breweries relied on wooden bottle crates, which proved heavy, difficult to clean and inefficient for mechanical handling. These inconveniences sparked interest among manufacturers in German plastic crate models, which they imported for testing. To withstand citywide transit, certain essential features were identified. The perfect crate would have to stack cleanly, carry substantial weight and survive repeated impact during transport. By 1965, Kirin Brewery introduced the first P-bako and full scale production began with one thousand crates produced daily.

While the Japanese P-bako ultimately serves the same purpose as any other beer crate, it is unique in having become a cultural and industrial icon. During morning and afternoon walks I became drawn to their versatility, whether neatly stacked behind sake shops, functioning as makeshift surfaces, or propping up signage. But it quickly became their high contrast brand colours, scratched surfaces and faded lettering that stuck. As I paused to photograph them, I came to understand them as an integral part of Tokyo’s visual landscape.

The crates’ contribution extends beyond convenience and aesthetics. As a seat, a P-bako is less than a foot and a half high, and sat on them, we all occupy the same low plastic stools, closer to the street and to one another. In this respect, their presence informs mood; formality eases and conversations become less guarded.

Japan has a long relationship with floor and low-level seating. Traditional interiors centred around tatami mats and low tables reflect an awareness of shared space, where sitting close to the ground carries a sense of humility. In modern Tokyo, the beer crate, though industrial in origin, could be seen as a progression of this culture, keeping people grounded within the spaces they share.

A parallel effect arises in tachinomi, standing bars where crates are often stacked high and topped with wooden boards as makeshift tables. The setup is as economical as it is freeing. The crate tables act as standing counters and, without the structure of formal seating, people can sway between groups, staying briefly or settling in for hours.

What endears the P-bako to me most is how seamlessly it moves between these worlds. During the day, the crate serves commercial networks; by night, it shifts to habitation, becoming part of the social architecture. The same containers that deliver bottles from around the country and into the hands of urbanites also partake in the night, supporting their weary bodies. Just for the evening, the city that works too hard is brought down a level to shed the day.

✺ Kiara