"We are talking every day on WhatsApp, we go everywhere together [in England], we talk about what the team lacks".
Others called it the "best game of the World Cup so far". "I am happy, because we have a lot of good young players, and now it is their turn to write the history of Japanese football".
"We have players that can change a game, we brought players from the bench who made the difference, so today we are just happy to have won and have gone through to the quarter-finals".
Japan's defender Gen Shoji (L) and Japan's forward Takashi Usami (2ndL) look dejected at the end of the Russian Federation 2018 World Cup round of 16 football match between Belgium and Japan at the Rostov Arena in Rostov-On-Don on July 2, 2018.
While firm favourites Brazil lock horns with underdogs Mexico, Belgium face a risky Japan in the matches on Monday.
"It's time to shine, definitely", Hazard said.
But it was't just the players.
"Now we can be more aggressive, we have the spirit and mentality to win and I think we can match Belgium mentally".
Belgium boss Roberto Martinez was more optimistic, and said the benefit of the extra rest would outweigh any potential negatives.
"We have been here twice in the past in round of 16 but this is different, we haven't exhausted ourselves yet so we can create a new opportunity", Nishino told a news conference on Sunday. The Red Devils are right in the midst of their golden generation, with so many of their most important players now in their physical primes.