Trinity Seven: Eternity Library & Alchemic Girl/Promotions

Autographs
In celebration, an autograph by one of the Trinity Seven voice actresses were released each day before the release date.

On February 17, 2017, an autograph by Nao Touyama was prematurely released on both the official site and Twitter. The next day, the mistake was realized and the same autograph was again released.

Afterwards, Rie Murakawa's autograph was released on February 19, Ryouka Yuzuki on the 20th, Yoko Hikasa on the 21st, Ayane Sakura on the 22nd, Aya Uchida on the 23rd and lastly Yumi Hara on the 24th.

Sexy Magus & Summer Vacation
On May 5, 2017, the Sexy Magus & Summer Vacation special event was announced to be held on July 16 at the Maihama Amphitheater in Chiba. , hosting the cast, staff and artists, as well as sales of various limited merchandise. Furthermore, the recital of an original story by Kenji Saito would be performed as well.

Participants

 * Yoshitsugu Matsuoka
 * Yumi Hara
 * Aya Uchida
 * Ayane Sakura
 * Yōko Hikasa
 * Ryoka Yuzuki
 * Rie Murakawa


 * Nao Tōyama
 * Rina Hidaka
 * Aya Suzaki
 * Ayaka Suwa
 * ZAQ
 * TECHNOBOYS PULCRAFT GREEN-FUND
 * POLKA DOTS

Anime Jam 2017
On July 23, 2017, Anime Jam 2017 announced that music from film as part of the event's lineup of performances on December 24, 2017. Furthermore, several members of the cast would also participate as well.

Perfomers

 * ZAQ

Cast

 * Yoshitsugu Matsuoka
 * Yumi Hara
 * Aya Uchida
 * Ayane Sakura
 * Yōko Hikasa
 * Ryoka Yuzuki
 * Rie Murakawa