The official social media account for the Grisaia visual novel and franchise has announced that a TV anime adaptation of the Phantom Trigger visual novel and feature film sequels is in production. The account has posted a celebratory illustration and has also confirmed in a follow-up tweet that the anime will be produced by Bibury Animation, the studio currently known for the forthcoming Black Rock Shooter: Dawn Fall anime. The TV series follows the 2019 and 2020 feature films also produced by Bibury Animation.
皆さま大変お待たせしました…劇場上映してきた『グリザイア：ファントムトリガー THE ANIMATION』シリーズが、ついに…ついにTVアニメになります
— グリザイア公式GPT8巻2月25日発売！ (@grisaia_fw) February 24, 2022