There is a specific kind of adrenaline that comes from a well-executed Giga cover, and 伊月知世 (Chise Itsuki) and 松永依織 (Matsunaga Iori) have just injected a concentrated dose of it directly into the scene. Their collaboration on 劣等上等 (BRING IT ON) isn’t just a performance; it’s a collision of two distinct vocal styles meeting one of Vocaloid’s most chaotic and beloved anthems. From the first beat, it is clear that this isn’t a tentative nod to the original, but a full-throttle attempt to match its intensity.
A Three-Year Dream Realized in Vocal Form
The context behind this release elevates it beyond a standard upload. In the description, 伊月知世 explicitly frames this as a milestone moment, noting that she spent three years searching for her own definition of “cool” and “vocal charm.” This track serves as the culmination of that search. Rather than standing in the shadow of her senior, 松永依織, 伊月知世 steps up to the plate with a confidence that feels earned. There is a tangible sense of admiration in the way their voices intertwine—less a competition and more a passing of the torch, or perhaps a synchronized sprint where both runners are perfectly matched.
For 松永依織, a veteran in the RIOT MUSIC roster, this track is another display of technical precision. Her delivery cuts through the mix with a sharpness that anchors the song, providing the perfect counterweight to 伊月知世‘s energetic assault. The chemistry is undeniable. When 伊月知世 mentions that she knew singing with her “Iori-senpai” would result in something cool, she wasn’t lying—the synergy validates her intuition.
Production and Visuals That Match the Energy
The production value here is top-tier, preserving the frantic, glitchy charm that made Giga and Reol‘s original a genre-defining hit, while giving the vocals enough room to breathe. The mixing allows the nuances of both RIOT MUSIC artists to shine without getting lost in the electronic noise. It’s a difficult balance to strike with a song this busy, but the execution is flawless.
Visually, the MV is a feast. Illustrations by Bata零 (Bata Zero) and video production by 夏灯工房 (Natsuto Koubou) create a dynamic backdrop that matches the song’s frenetic pace. The thumbnail design by ヤシロキラ (Yashiro Kira) sets the stage perfectly, promising a high-energy experience that the video delivers on without hesitation. It’s a cohesive package that respects the source material while firmly establishing the identities of the covering artists.
Why This Cover Matters
Covering 劣等上等 (BRING IT ON) is a bold move—it’s a song that demands technical skill and stamina. But for 伊月知世, this is a statement of arrival. It is the sound of an artist who has stopped chasing and started running alongside her idols. For fans of RIOT MUSIC, this collaboration is a rewarding payoff, a glimpse of the dynamic that has been building over three years of shared history. It is loud, it is fast, and it is undeniably cool.
Track Credits
- Title: 劣等上等 (BRING IT ON)
- Vocals: 伊月知世, 松永依織
- Original Artist: Giga ft. 鏡音レン・リン (Kagamine Rin & Len)
- Original Lyrics: Reol
- Original Composition: Giga
- Illustration: Bata零
- Video: 夏灯工房
- Thumbnail Design: ヤシロキラ
- Label: RIOT MUSIC
- Released: August 26, 2026
▶ Watch: 伊月知世 — 劣等上等 (BRING IT ON) ft. 松永依織 (Official Cover MV) on YouTube
