Sakura Inami, a recurring character across the franchise's main series, films, and idol-themed spin-off, is the second daughter of a family indebted to Mirai Kuriyama. Her older sister Yui Inami was killed by Mirai, driving Sakura to seek revenge. This pursuit transformed her into a seemingly emotionless individual focused solely on killing Mirai upon their reunion. Lacking the innate spiritual abilities possessed by her sister and Mirai, Sakura harbored childhood envy; she instead learned cooking to contribute. After confronting Mirai, Sakura wields a spear powered by consuming Youmu stones, a weapon requiring Mirai's life as sustenance. Mirai discerns Sakura's underlying regret and halts the weapon's consumption, leading to their reconciliation. Sakura moves in with Mirai.

Her personality softens considerably afterward, revealing a deeply caring and protective nature beneath her reserved exterior. She forms a sisterly bond with Mirai, accompanying her to school and daily activities despite initial reluctance. Sakura maintains a calm demeanor; her deadpan humor surfaces through pranks. In the film sequel, Sakura becomes intensely protective when Mirai loses her memories, actively preventing Mirai from interacting with Akihito Kanbara per his request to shield her from her past as a Spirit World Warrior. Sakura shows visible distress over Mirai's suffering, frequently reassuring her by referencing their childhood friendship, and risks her own safety to protect the amnesiac Mirai from Youmu. The film concludes showing Sakura participating in tennis club activities with Mirai and their friend Ai Shindou.

Within the idol-themed spin-off, Sakura appears as one of four "idol judges" conducting comedic trials. Portrayed in a super-deformed style, she wears idol-style clothing under a black court dress. As the taciturn member, she displays minimal interest in the proceedings and is often scolded by Mirai for her lack of participation, aligning with her established traits of emotional reserve and deadpan delivery.