The official website for Yuka Iguchi announced on Friday that the Japanese singer will perform the opening theme for the Is It Wrong to Try to Pick Up Girls in a Dungeon? Sword Oratoria ( Dungeon ni Deai o Motomeru no wa Machigatteiru no Darō ka? Gaiden: Sword Oratoria ) anime.

Iguchi previously performed "Hey World," the opening theme song for the original Is It Wrong to Try to Pick Up Girls in a Dungeon? television anime, in addition to theme songs for Lostorage incited WIXOSS, Strike the Blood, and heavy Object. Iguchi also works as a voice actress, having played roles such as Crusch Karsten in Re:ZERO and Mitsuba Sangu in Seraph of the End.

The anime, based on a spinoff light novel series from author Fujino Ōmori and illustrator Kiyotaka Haimura, will premiere in April. The project serves as the 10th project to commemorate GA Bunko's 10th anniversary.

The anime's previously revealed cast includes:

Saori Ōnishi as Aiz Wallenstein

Mutsumi Tamura as Finn Deimne

Juri Kimura as Lefiya Viridis

Nobuhiko Okamoto as Bete Loga

Rie Murakawa as Tiona Hiryute

Minami Takahashi as Tione Hiryute

Ayako Kawasumi as Riveria Ljos Alf (replacing Risa Taneda)

Kenji Nomura as Gareth Landrock

Yurika Kubo as Loki

Youhei Suzuki (The "Hentai" Prince and the Stony Cat., Urara Meirochō) is serving as the show's new director at J.C. Staff. Writer Hideki Shirane, character designer Shigeki Kimoto, and composer Keiji Inai are returning from the original anime.

GA Bunko describes the anime's story:

Sword princess Aiz Wallenstein. Today, once again, the strongest female swordsman heads to the giant labyrinth known as the "Dungeon" along with her allies. On the 50th floor where mysteries and threats such as a decayed dragon's corpse that crumbles to ash and an irregularity that creeps ever closer to the party loom, Aiz calls for the wind and heads deeper into the darkness of the Dungeon. Eventually, she finds herself meeting a boy for the first time. "Um, are you OK?" In the Labyrinth City of Orario, the contrasting stories of the boy and the girl intersect!

Yen Press is releasing the novel series in English, along with the original Is It Wrong to Try to Pick Up Girls in a Dungeon? light novel series and the Is It Wrong to Try to Pick Up Girls in a Dungeon? manga adaptation.

The Sword Oratoria spinoff light novels have also inspired an ongoing manga adaption by Takashi Yagi on Square Enix's web magazine Gangan Online .

J.C. Staff adapted the original light novel series into a television anime in 2015. Sentai Filmworks licensed the series for North America, and Crunchyroll streamed the anime as it aired in Japan.

Source: Animate Times