New to this outing are Donnie Yen, Bill Skarsgård, Hiroyuki Sanada, Rina Sawayama, Shamier Anderson, Clancy Brown and Scott Adkins.

Source: https://www.latimes.com/entertainment-arts/movies/story/2023-03-13/john-wick-4-sxsw-keanu-reeves-donnie-yen

Rina Sawayama deserves her own spin-off.

Source: https://variety.com/2023/film/news/john-wick-chapter-4-first-reactions-keanu-reeves-1235544987/

Rina Sawayama publicly called out The 1975 frontman at Glastonbury during her set on Saturday.

Source: https://www.dailymail.co.uk/tvshowbiz/article-12231373/Ive-Rina-Sawayama-publicly-calls-labelmate-Matty-Healy.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Rina Sawayama, who stars in the film as Akira, also contributed to the soundtrack with her song "An Eye for An Eye," which reflects her character's questioning of John Wick's vengeance.

Source: https://screenrant.com/john-wick-chapter-4-soundtrack-songs/