Shiena Nishizawa (西沢 幸奏, Nishizawa Shiena, born February 23, 1997), also known by her stage name Exina (stylized as EXiNA), is a Japanese pop rock singer from Saitama, signed to Sacra Music under Sony Music Entertainment.

[3][4] She released her debut single "Fubuki" (吹雪, Snow Storm) on February 18, 2015; the song is used as the closing theme to the 2015 anime series Kantai Collection aka KanColle.

[6] Her second single "Brand-new World / Piacere" (ピアチェーレ) was released on November 11, 2015; "Brand-new World" is used as the first opening theme to the 2015 anime series The Asterisk War, while "Piacere" is used as the closing theme for the original video animation (OVA) Aria the Avvenire.

[7] Nishizawa made her first overseas appearance in Düsseldorf, Germany, at the DoKomi anime convention in April 2016.

[26] She released the single "Divine" in May 2021; the title song was used as the opening theme to the anime series Blue Reflection Ray.

The demo had no title and different lyrics, and at the time of her audition, it had yet to be decided that she was to sing the song for Kantai Collection.

After the release of the single, she was "filled with emotions" and was determined to start writing her own songs, as "Fubuki" was not written by her.

For the single's B-side "Piacere", she wanted the song to relate to Aria the Avvenire depicting a generational change, and to express the feelings of kindness, pleasure, and sadness.

[33] Nishizawa related to Animate Times and Akiba Souken the production of her fifth single "Love Men Holic".

One influence in the song is the personality of the series' main character Koizumi, who Nishizawa describes as not "putting emotions on the table", thus inspiring the use of salt-related terms in the lyrics.