Kroi Talks New Song ‘SPIN’ & the Creative Journey Intersecting With the Chaos of ‘JoJo’

Kroi’s new song “SPIN” was written as the opener for the anime Steel Ball Run: JoJo’s Bizarre Adventure .

A rousing melody and beat that evoke the American Old West, where the story is set, blend with Kroi’s signature chaotic funkiness, resulting in a highly original and exhilarating track.

The song took off on streaming right after release, including the U.S. and debuted at No.

44 on Billboard’s Hot Rock & Alternative Songs chart (dated Oct.

10, 2026), the band’s first-ever entry on a Billboard U.S. chart.

Talking with the band revealed the relentless spirit of inquiry and creative urge behind it — an attempt to depict a new world no one has ever seen by digging into cultures closely tied to the band, from the anime song, a uniquely Japanese form of pop, to The Ventures, part of vocalist Leo Uchida’s roots.

Drummer Hidetomo Masuda was unfortunately absent due to illness, but the remaining four members shared the story behind the making of “SPIN.” Your new song “SPIN” is the opening theme for the anime Steel Ball Run: JoJo’s Bizarre Adventure .

What does Steel Ball Run , and by extension the JoJo’s Bizarre Adventure series, mean to the members of Kroi? Yuki Hasebe (Gt.): Of all the members, I’m the one who especially loves JoJo , and I’ve read quite a lot of it.

Steel Ball Run was my favorite of them all.

I’ve always been drawn to the Old West aesthetic, so pairing that with JoJo is, for me, a collaboration between two things I love.

When we got the offer to do the opening theme this time, I was really happy and surprised.

Uchida: I hadn’t experienced JoJo yet, but it’s a series that people around me are deeply passionate about, so I’d been wanting to check it out someday.

This was a good opportunity in that sense, too.

What did you feel after experiencing the world of JoJo ? Uchida: It really is amazing.