Hatsune Miku and Robin from Honkai: Star Rail have officially come together for Summeretto Medley: Tell Your World × Only by Chasing the Wind. The collaboration MV premiered on September 5, 2026 at 7:00 PM JST, following an exchange of announcements between the official Hatsune Miku and Honkai: Star Rail accounts.
The project connects songs from two very different periods and worlds: Tell Your World, the 2012 livetune feat. Hatsune Miku song by kz, and Only by Chasing the Wind, Robin's new track released with HOYO-MiX and Chevy on August 26, 2026. The MV places both virtual singers within a shared summer-themed visual production.
Quick Summary
- Title: Summeretto Medley: Tell Your World × Only by Chasing the Wind
- Japanese title: 夏空メドレー：Tell Your World × ただ風を追いかけて
- Type: special medley / music video collaboration
- Collaboration: Hatsune Miku × Robin
- Related franchise: Honkai: Star Rail
- Verified initial announcement: September 4, 2026
- MV release date: September 5, 2026
- Premiere time: 7:00 PM JST
- Status: MV released
- Primary platform: YouTube
- First song: Tell Your World
- Original first-song performer: livetune feat. Hatsune Miku
- Tell Your World lyricist: kz
- Tell Your World composer: kz
- Tell Your World arranger: kz
- Tell Your World EP release: March 14, 2012
- Second song: Only by Chasing the Wind
- Performers / artists: Robin, HOYO-MiX, Chevy
- Single release date: August 26, 2026
- Original track length: 2:03
- Single format: three tracks
- Single copyright: miHoYo
- Honkai: Star Rail character: Robin • Summeretto
- Robin • Summeretto rarity: 5-star
- Path: Remembrance
- Combat Type: Wind
- Role: support character
- Memosprite: Summer Songbirds
- Game version: Honkai: Star Rail Version 4.5
- Version 4.5 title: To Roll the Stars in Astropolis
- Honkai: Star Rail developer: HoYoverse
- Global/store publisher: COGNOSPHERE
- MV announcement copyright: Crypton Future Media and COGNOSPHERE
- Announced collaboration focus: music and MV
- Playable Hatsune Miku in Honkai: Star Rail: not announced
- MV-specific in-game reward: not announced
- Hatsune Miku gameplay event: not announced
- Standalone streaming release for the medley: not confirmed in the verified sources
- Current status: MV available to watch
Summeretto Medley and Honkai: Star Rail
Summeretto Medley Connects Two Songs From Different Worlds
The collaboration is not built around an entirely new composition. Summeretto Medley combines Tell Your World and Only by Chasing the Wind, preserving musical material already closely associated with Hatsune Miku and Robin.
The MV then brings those identities together in a newly produced presentation. Its visuals lean into the summer imagery associated with Robin • Summeretto while allowing Hatsune Miku to retain her own recognizable visual identity throughout the medley.
That makes the project a genuine musical crossover rather than simply a shared illustration or character promotion.
Tell Your World Brings a Hatsune Miku Classic
Hatsune Miku's side of the medley comes from Tell Your World, performed by livetune feat. Hatsune Miku and written, composed and arranged by kz.
The song's release on the Tell Your World EP arrived on March 14, 2012 through TOY'S FACTORY. It has since remained one of the long-running songs associated with Hatsune Miku's digital and live projects.
Its selection creates a notable contrast: a Miku song from more than a decade ago is being paired directly with a Robin track released in 2026.
Only by Chasing the Wind Represents Robin Summeretto
The other half is Only by Chasing the Wind, credited to Robin, HOYO-MiX and Chevy. Its official single launched on August 26, 2026, during the period in which Robin • Summeretto arrived in Honkai: Star Rail.
The main version runs for 2 minutes and 3 seconds. The three-track single also includes Harmonic Accompaniment and Instrumental versions.
As a song connected to Robin's Summeretto identity, it provides the most direct musical counterpart for Tell Your World in this crossover.
The MV Arrives During Version 4.5
The collaboration was released while Honkai: Star Rail is in Version 4.5, To Roll the Stars in Astropolis. One of the major characters introduced in the update is Robin • Summeretto, a Remembrance character with the Wind Combat Type.
Robin • Summeretto functions as support and can summon the Summer Songbirds memosprite during combat. Her summer presentation is also one of the visual themes surrounding Version 4.5.
The timing therefore makes the Hatsune Miku collaboration an extension of Robin • Summeretto's musical identity, while the MV itself remains a standalone music-video project.
This Is a Music Collaboration, Not a Playable-Character Announcement
One context boundary is important: the official material currently announces a special medley and MV featuring Hatsune Miku and Robin.
None of the verified sources announce Hatsune Miku as a playable Honkai: Star Rail character, skin, Light Cone, companion or dedicated gameplay-event participant.
There is also no confirmed in-game reward specifically tied to this MV. Until HoYoverse or Crypton Future Media announces otherwise, Summeretto Medley is best understood as an official cross-IP music collaboration.
Why This Matters
1) Both characters are represented through meaningful songs
Tell Your World carries Hatsune Miku's musical identity, while Only by Chasing the Wind is directly associated with Robin • Summeretto.
2) It connects two very different musical eras
Tell Your World dates back to 2012, while Robin's single arrived only in August 2026.
3) Robin Summeretto expands beyond gameplay
Following her Version 4.5 debut, Robin's summer identity now extends into a crossover MV with Hatsune Miku.
4) The collaboration is concrete without overclaiming gameplay content
The MV is a clearly confirmed joint project, while a playable Hatsune Miku or related in-game content remains unannounced.
Game and Music Information
For now, the additional important information currently known includes:
- Summeretto Medley is an official Hatsune Miku and Robin collaboration
- its official English name is Summeretto Medley: Tell Your World × Only by Chasing the Wind
- its official Japanese title is 夏空メドレー：Tell Your World × ただ風を追いかけて
- the official Hatsune Miku account announced a September 5, 2026 premiere
- Honkai: Star Rail also acknowledged and confirmed the Hatsune Miku and Robin medley
- the premiere was scheduled for 7:00 PM JST
- the MV is now available on YouTube
- the two featured songs are Tell Your World and Only by Chasing the Wind
- Tell Your World is performed by livetune feat. Hatsune Miku
- kz wrote, composed and arranged Tell Your World
- the Tell Your World EP was released on March 14, 2012
- the official Tell Your World music video remains available through kz-livetune
- Only by Chasing the Wind is performed by Robin, HOYO-MiX and Chevy
- the Only by Chasing the Wind single was released on August 26, 2026
- the main version runs for 2:03
- the single contains three tracks
- the second track is Only by Chasing the Wind - Harmonic Accompaniment
- the third track is Only by Chasing the Wind - Instrumental
- the single copyright is listed under miHoYo
- Robin • Summeretto is a new character in Honkai: Star Rail Version 4.5
- Robin • Summeretto is a 5-star character
- her Path is Remembrance
- her Combat Type is Wind
- she primarily serves a support role
- Robin • Summeretto can summon the Summer Songbirds memosprite
- Version 4.5 is titled To Roll the Stars in Astropolis
- Google Play currently lists Robin • Summeretto as part of the Version 4.5 update
- Honkai: Star Rail is developed by HoYoverse
- the global Google Play listing is published under COGNOSPHERE PTE. LTD.
- the Hatsune Miku announcement carries Crypton Future Media and COGNOSPHERE copyright notices
- no playable Hatsune Miku has been announced
- no Hatsune Miku skin or companion has been confirmed
- no gameplay reward specifically tied to this MV has been announced
- no standalone streaming single for the Summeretto Medley version has been confirmed
- further developments depend on future official announcements
- the initial announcement is available through the Hatsune Miku Official X Post
- the game-side confirmation is available through the Honkai: Star Rail Official X Post
- the full video is available through the Summeretto Medley Official MV
- game information is available through the Honkai: Star Rail Official Website
- the Android version is available through Honkai: Star Rail on Google Play
- Version 4.5 details are available through HoYoLAB Version 4.5 Update Details
- Robin's single is available through Only by Chasing the Wind on Apple Music
- the original video is available through the Tell Your World Official Music Video
Closing
Summeretto Medley brings Hatsune Miku and Robin together through a music-first crossover, combining Tell Your World and Only by Chasing the Wind into one official MV available since September 5, 2026.
For now, the announced collaboration stops at the medley and music video. A playable Hatsune Miku, dedicated gameplay event, in-game rewards and a standalone audio release for the medley all remain unannounced.
- Hatsune Miku Official X — Official Summeretto Medley Announcement and September 5 Premiere Time
- Honkai: Star Rail Official X — Official Hatsune Miku and Robin Summeretto Medley Confirmation
- YouTube — Official Summeretto Medley Music Video
- Google Play — Official Honkai: Star Rail Store Page and Robin Summeretto Version 4.5 Update
- HoYoLAB — Official Version 4.5 Update Details and Robin Summeretto Information
- Apple Music — Only by Chasing the Wind Single Release Date, Artists, and Track Information
- kz-livetune / YouTube — Official Tell Your World Music Video and Original Song Information
