From brotherhood and their relationship with their fans to some huge international shows, it's all here.
One Ok Rock have shared a video recapping their 2017 European Tour, where they played some of their biggest international shows yet.
Here are six things we learned from it:
1. THEY'RE A TRUE BROTHERHOOD...
"We’ve been doing this band for almost 12 years right now," explains frontman Taka Moriuchi.
"We’re never fighting each other actually, they understand me and also I understand them. We trust each other, it’s like almost family, you know, almost like brothers."
2. ...AND THAT INCLUDES THEIR CREW.
"It's kind of like a really big family," adds Taka. "There's a really good connection to the crew and the band."
3. THE WORLD IS CATCHING ON.
OOR hit venues across Europe on this tour, and in terms of the response, it was by far their most successful one yet.
"Before we did, maybe two times, a European tour," they remember.
"This is way better than before. People are getting used to our style of music."
4. THE BAND ARE BLOWN AWAY BY IT ALL.
"When I’m singing and I forgot the lyrics sometimes, [the fans] cover it, in Japanese," enthuses Taka.
"When I saw it the first time, I was like, 'Wow, what the fuck is going on?!' We’re just a Japanese band, they already know our lyrics and songs, it’s crazy."
5. THESE SHOWS WERE PACKED OUT
"Every place is almost sold out, I think it’s the best tour so far," says the frontman.
From what we experienced at their UK shows, we can second that.
6. IT FELT LIKE A WATERSHED MOMENT
The band have been a huge deal in Japan for ages, but they're clearly being embraced across the globe now - and not before time.
"I just want to say thank you to everyone for supporting us all the time," concludes Taka.
"I’m really happy. We’re going to still keep going, writing songs and doing tours. It’s my life."