Nijigaku: Chiemi Tanaka engraved Rina's lines inside a box

Through her Twitter account, the voice actress Chiemi Tanaka , who plays the character of Rina Tennoji in the series Love Live! Nijigasaki Gakuen School Idol Doukoukai (also abbreviated as Nijigaku), published two photographs showing her with a box on her head, with the following explanation

"Secret story about the voice recording of the sixth episode... In fact, during the cardboard box scene, I was actually with a box on my head and doing the recordings at the same time! Isn't that great? It was even quite fun. I am very happy to have been able to share this experience with Rina-chan.

📶6話収録秘話📶
実はあのダンボールのシーン、田中も実際にダンボールの中に入ってアフレコしていたんです…！すごいでしょぉ～？！✨
見た目はちょっと面白いかもしれないけど(笑)
こだわってくれたのが伝わってとても有難いですし、璃奈ちゃんと同じ状況でアフレコできて嬉しかったです！#虹ヶ咲 pic.twitter.com/Dab8pRA88A
— 田中ちえ美 (@t_chiemi1006) November 11, 2020

The series is on air since October 3rd in Japan and is confirmed with a total of thirteen episodes. These new idols were presented in the game Love Live! Perfect Dream Project and the cast of voices was officially presented during the Tokyo Game Show event, held on September 21st, 2017. During that event it was also revealed that Love Live! School Idol Festival ALL STARS would be the official title of the Perfect Dream Project.