 |
| Phantom Siita’s Founding Member Hisui to Graduate at the End of May |
Phantom Siita has shared some unexpected and emotional news with fans — founding member Hisui (灯翠) will be stepping away from the group at the end of May 2025, citing health reasons.
Effective immediately, she will also no longer be participating in any ongoing group activities, including the group's 1st Japan Tour "Flame Medusa", which will now continue as a four-member act.
This announcement was made public on 17 May 2025, with management issuing a heartfelt statement expressing regret for the sudden update and gratitude to fans and stakeholders.
 |
The message made clear that the decision was made in consideration of Hisui’s health, and that both the team and agency stand behind her.
“To everyone who has always supported Phantom Siita, we are deeply sorry to bring this sudden announcement,” the group’s official notice read. “From today onward, our Japan tour and all activities will continue with the remaining four members. We will move forward with unity and determination.”
From WELIT to Phantom Siita — A Quiet Force in Green
Hisui, known off-stage in her earlier idol days as Kimura Mana (木村愛菜), has had a quiet but steady presence in the scene. She originally debuted with WELIT in mid-2023 before graduating in March 2024.
Shortly after, she joined the newly-formed Phantom Siita as a founding member, carrying the member colour green and becoming known for her serene aura and emotionally resonant performances.
Her birthday, 1 May 2003, makes her 22 years old, and under the Taurus sign — fitting for someone many fans saw as calm, grounded, and quietly reliable.
She joined Cloud Nine Agency in 2024 and has been active with Phantom Siita since. Her departure marks the end of a short but impactful era for both herself and the group.
While fans are understandably saddened, many have also flooded social media with support, reminiscing on her performances and wishing her strength and rest in the days ahead.