Siero is named as a guest on ACE COOL's album Haigamine and as the featured artist on the lead single from LEX's album SPEEDSTAR. The music video for 'Sense feat. Siero' is set for a YouTube release on May 1, 2027, LEX's birthday.
Siero's presence in these stories is almost entirely as a guest on other artists' records. ACE COOL's third album, Haigamine, released on September 16, 2026, lists Siero among the guests; the nine-track record also features Jinmenusagi, Bonbero, BFN TOKYOTRILL, and JC. The other appearance is on LEX's 'Sense feat. Siero', the lead single from the album SPEEDSTAR.
That collaboration has had its release stretched out. The music video for 'Sense feat. Siero' is scheduled for YouTube on May 1, 2027, LEX's birthday, roughly a year after SPEEDSTAR came out. A teaser is already available. LEX emerged from SoundCloud and released his first album at 16, and he is scheduled for a Toyota Arena show in October 2026.
The other two stories in this set are scene context rather than Siero credits. Siero does not appear in the reported lineups for LYRICADE at Shibuya WWW, whose final additions brought the bill to 25 acts for October 25, 2026, or in the applicant and prize figures for ABEMA's RAPSTAR2026, which drew 12,953 applicants and premieres October 10, 2026. These stories place Siero's name next to a broader hip-hop bill but do not tie the artist to either event.
Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.
Structured graph also available as JSON at /public/entities/siero.
CC BY 4.0.
Worldwide Skippa, yvnlazy, and Ludio are the final additions to LYRICADE at Shibuya's WWW, bringing the bill to 25 acts for the October 25 event. The three also appear on the CONCRETE GREEN 12 mixtape, and yvnlazy and Ludio released the Kianna collaboration "Totteoki" in January 2026. Tickets are 2,500 yen with a separate two-drink charge.
Rapper ACE COOL released his third album, Haigamine, on Wednesday, September 16, about two years after his previous album. The nine-track record is named after Mt. Haigamine, which overlooks his hometown of Kure, Hiroshima Prefecture, and is the first to use a place name from Kure in its title. Guests include Jinmenusagi, Bonbero, Siero, BFN TOKYOTRILL, and JC.
ABEMA's rapper discovery audition RAPSTAR2026 has drawn 12,953 applicants, the highest ever, nearly double last year's 6,780. The 2026 season premieres October 10 on ABEMA, with a 10 million yen prize, up from 3 million. Seven producers provided beats for application videos.
Rapper LEX will release the music video for 'Sense feat. Siero' on YouTube on May 1, 2027, his birthday, approximately one year after the album 'SPEEDSTAR' dropped. A teaser is already available. The track is the lead single from the album, which features eight new songs and a pre-released track. LEX, who emerged from SoundCloud and released his first album at 16, is scheduled for a Toyota Arena show in October 2026.