This article contains details about plotlines described in the anime.
Do not proceed unless you want to be spoiled.
Sarah Kazuno is the leader of Aqours's rival group, Saint Snow. She is one of Saint Snow's two members, the other being her younger sister, Leah Kazuno. Sarah is a third-year student at Seisen Girls' Academy. Her image color is sky blue.
While singing, Sarah is the lead vocalist. Sarah is also the lyricist and the composer of the songs for Saint Snow.
Sarah possesses an outgoing personality, usually speaking on behalf of both of Saint Snow's members in its exchanges with Aqours.
Despite her being the more hospitable of the Kazuno sisters, Sarah maintains her sense of combativeness through asserting control over conversations she engages in. Her competitiveness is also highlighted in her sole desire to win the Love Live!. She believes that, through reaching the same ends which A-RISE and µ's arrived at in the Love Live!, victory in the Love Live! would give her insight into the qualities that made the two idol groups.
Much like her younger sister, Sarah displays a high level of conviction for Saint Snow's cause. Despite complimenting Aqours for their performance at the Tokyo idol event, it is revealed through Leah's comments that Sarah belittled Aqours's performances for being child's play, and would rather they give up on winning the Love Live!.
Sarah carries herself with a sense of self-assurance as well, boasting of Saint Snow's performance before Aqours in the lead-up to their performance at the Tokyo idol event.
|In episode 7, Aqours were invited to perform at an event in Tokyo. At Kanda Shrine, Chika heard Sarah and Leah Kazuno singing “SELF CONTROL!!”. Although the two girls were strangers to Chika and the rest of Aqours, Sarah recognized them from their PV and asked if they were in Tokyo for the upcoming event. The Saint Snow members then left, leaving Aqours impressed with their acrobatics and singing skills.
The next day at the event location, the Aqours members were surprised to find out the girls they had met at Kanda Shrine were school idols, too. Sarah introduced herself, and the episode ended just as Saint Snow were to take the stage.
|08|| "Isn't it Frustrating?"|
(くやしくないの? "Kuyashikunai no?")
|In episode 8, Saint Snow performed “SELF CONTROL!!” on stage at a school idol event in Tokyo. While neither Aqours nor Saint Snow were announced as winners of the event, the results of the audience poll used to rank the groups showed Saint Snow was very close to being part of the winners' group. Approached by Saint Snow, Aqours was complimented on their performance but told they might be better off giving up competing in Love Live! by Sarah, and warned not to take Love Live! lightly by a crying Leah.|
|12|| "It's Time to Fly"|
(はばたきのとき "Habataki no Toki")
|In episode 12, Aqours went to Tokyo in order to find out what made μ's great. Chika had arranged for Aqours to meet up with Saint Snow, who told Chika and the others they didn’t know what made μ's and A-RISE different. To them, what mattered was winning and following in the footsteps of their predecessors. Together, both groups watched the announcement of the Love Live! finals being held at the Akiba Dome on the screen outside the UTX High School building.|
|04|| "Don't Call Me Dia-san"|
(ダイヤさんと呼ばないで "Dia-san to Yobanaide")
|In episode 4, Chika had a video call with Sarah.|
|06|| "Aqours WAVE"|
|In episode 6, Chika discussed the difference between school idols and regular idols over the phone with Sarah while Leah was in the background.|
|In episode 8, Aqours were invited to Hakodate to attend the Hokkaido Love Live! preliminaries as guests. Before the competition, they visited Saint Snow in their dressing room. Chika accepted Sarah’s challenge to bring their best to the Love Live! finals, but Ruby noticed that something seemed to be the matter with Leah.
During Saint Snow’s performance, they made a mistake in the choreography and fell on stage, which ended up costing them their spot in the finals. When Aqours went back to their dressing room, they had already left.
The Uchiura girls went sightseeing in Hakodate, and ended up at the restaurant where Sarah and Leah worked. Ruby found Leah crying in her room, and later at dinner the sisters’ fight about Leah wanting to disband Saint Snow resurfaced.
|09|| "Awaken the power"|
(Awaken the power)
| In episode 9, Sarah eavesdropped on Ruby and Leah working hard to finish a song dedicated to her and Dia.
Ruby and Leah finally revealed their secret to their sisters, and the rest of Aqours were acting mysteriously about also showing up in Hakodate. At the event, Saint Aqours Snow performed Awaken the power. Afterward, Leah told Sarah she would be disbanding Saint Snow but that she would start a new school idol group of her own.
|10|| "Finding a Way to Shine"|
(シャイニーを探して "Shainii o Sagashite")
| In episode 10, Saint Snow visited Aqours to help them practice. After Aqours switched their kimono for more appropriate practice wear, they were pushed hard by Sarah and Leah.
The guests were surprised to find out the students of Uranohoshi had failed to save their school from the merger, but were quick to show their support. Mari recieved a phone call from her parents offering her the position as director at the new school. Due to already having plans for next year she turned the offer down. Later, the members of Aqours saw Sarah and Leah off.
|12|| "Sea of Light"|
(光の海 "Hikari no Umi")
|In episode 12, the members of Aqours headed to Kanda Shrine, where they prayed for good fortune in the competition and realized many other school idols had done the same. Before leaving, they met Saint Snow, and Sarah asked Chika if they wanted to win the Love Live!.|