Assault Lily New Chapter: At the Seeds' Frontier / When the Bugle Blooms

Assault Lily New Chapter: At the Seeds' Frontier / When the Bugle Blooms (アサルトリリィ・新章 種の最果ての地で／金瘡小草の咲く時) is a stage play created by AZONE International and acus. It ran from December 19, 2023 to December 25, 2023 at Theater 1010. The stage play tells two stories simultaneously, one (At the Seeds' Frontier) focused on Legion Sanngriðr, the other (When the Bugle Blooms) about an "Oshima Offshore Nest Investigation Team" made up of a variety of Lilies from many Gardens.

A sequel, Assault Lily New Chapter: Twilight of the Flowers / The Ringing Depths, is planned for May 2024.

Production
Nishimoto Rimi was originally cast in the role of Futagawa Fumi, but had to withdraw from the play due to worsening symptoms of Graves' disease. Fumi was recast as Haruka Risa, who at the time had played the roles of Yoshii Kasumiko in Assault Lily: The Gleam of Dawn and Matsunaga Brigitta Kayo in the Lily Project version of Assault Lily: Schwester's Prayer.