For ninety-five minutes at the NRG Stadium, Brazil stared into an abyss they never expected to find at the round of 32. Then Gabriel Martinelli swung a boot and closed it. His right-footed finish into the bottom right corner, deep into stoppage time, spared the five-time world champions the indignity of an early exit and sent Japan home clutching nothing but the sympathy of the neutrals.

It finished Brazil 2, Japan 1, but the scoreline flatters the favourites and undersells the underdogs. Japan had led, harried and frustrated for the best part of an hour, playing with a clarity of purpose that unsettled a Brazil side accustomed to bending opponents to their will. That the game turned only in its dying breath tells the story of an evening in Houston where nerve mattered more than reputation.

This was a knockout tie stripped to its bones: one goal separating survival from elimination, one moment of quality deciding which nation marches on. Brazil found that moment. Japan, for all their courage, could not. In tournament football, the margin is often that cruel.

Japan strike first

Japan came to trouble, not to admire, and for a spell they did exactly that. In the 29th minute they broke with the speed and conviction that has defined their rise, and Kaishu Sano arrived at the end of it. Picking up possession on the edge of the box, he steadied himself and struck cleanly with his right foot, the ball curling low into the bottom left corner. The fast break had ripped Brazil open, and the finish left no room for argument.

For the men in blue it was vindication of a plan executed to the letter. They had absorbed pressure, waited for the transition, and pounced the instant Brazil overcommitted. Sano's strike carried the calm of a side that believed it belonged, and for long stretches thereafter Japan looked every inch the more organised, more purposeful team.

Brazil, by contrast, wore the look of a side unprepared for resistance. The rhythm they craved never came; the passing sharpened only in flashes. A goal down against opponents happy to defend deep and counter with menace, the favourites were being asked questions they had not planned to answer this early.

Casemiro drags them level

The equaliser, when it arrived in the 56th minute, came from a source Brazil have long leaned on in moments of need. Gabriel Magalhães delivered a cross from the right, and there was Casemiro, rising at the near angle of the six-yard box to power a header into the top right corner. It was a goal of old-fashioned virtues: a good ball in, a good run met, a finish struck with authority.

It was also entirely fitting that Casemiro should be the one to steady the ship. The midfielder's presence lends Brazil a spine when panic threatens, and his header did more than restore parity. It restored belief, releasing the tension that had crept through the ranks and reminding a side of their pedigree that the tie was theirs to seize.

Japan, though, did not fold. If anything, the goal seemed to steel them further. They continued to press their moments, refused to sit back into a shell, and looked capable of landing a second blow of their own. The contest tightened into a war of nerves, both sides sensing that the next goal would decide everything.

The cruel finale

And decide everything it did, in the fifth minute of added time. With extra time looming and Japan's resistance edging towards a famous result, Bruno Guimarães found space and threaded the ball into the centre of the box. Martinelli met it and did not flinch, guiding a right-footed strike into the bottom right corner. The NRG Stadium erupted; Japan's players sank where they stood.

There is a particular agony to conceding so late, and Japan will replay the sequence in their minds for weeks. They had done almost everything right, had matched a giant for temperament and technique, and were seconds from forcing the lottery of extra time. Instead, one lapse, one Brazilian surge, and the tournament was over. Football offers no consolation for gallantry.

For Brazil, relief will outweigh joy. This was not a performance to send a ripple of fear through the remaining contenders, and the manner of the win — clinging on, then striking at the death — hints at fragilities that better sides will look to exploit. But knockout football rewards results, not aesthetics, and Brazil have the result.

What comes next

Progress secured, Brazil advance into the last 16 with their aura intact but their vulnerabilities exposed. They will know that stronger opponents would have punished the sluggishness that let Japan lead and lingered long into the second half. The talent to go deep in this World Cup is plainly there; the consistency, on this evidence, remains a work in progress that the coaching staff must address before the next assignment.

Martinelli's intervention may prove a turning point in the tournament's narrative — the sort of late escape that champions look back on as the night they refused to lose. Casemiro's leadership and Gabriel Magalhães's delivery underlined that Brazil's collective still knows how to conjure a moment when the situation demands it. Whether they can start on the front foot, rather than chase the game, is the question that now defines their campaign.

Japan, meanwhile, depart with heads that should be held high. They arrived at the round of 32 and left having taken one of the game's aristocrats to the very brink. Sano's strike was a highlight worthy of any stage, and the collective discipline on show marks another step in a footballing story trending steadily upward. The heartbreak is real, but so too is the pride. They lost to a champion's punch, thrown in desperation, at the last possible second.