Arisa Minase lives with her older brother Shizuku while her parents work abroad. She maintains a cheerful, kind, and thoughtful demeanor, often cooking, reading, enjoying sweets, and showing concern for others. Despite this gentleness, she possesses strong will and assertiveness, reacting physically to unwanted advances. She deeply values her relationships, especially with Shizuku, but often gets lost in anxious thoughts about others' well-being.

On her birthday night with Shizuku, Arisa is transported to a surreal realm resembling Wonderland, trapped in an endless time loop repeating the same day. Inhabitants bearing uncanny resemblance to people from her life—Shizuku, classmates Ren Kisaragi and Nao Kurotani, twins Asagi and Tooya Kamijou, and school nurse Tsukasa Tokitou—insist she is their "Alice." Arisa rejects this, clinging to her identity as Minase Arisa and her desire to return home, fueling confusion and homesickness.

Navigating this strange world, Arisa learns the time loop persists because Wonderland lacks its true "Alice," and breaking it requires her acceptance of that role. Daily events culminate in a tea party hosted by Chrono (Tokitou's counterpart) and the Queen of Hearts' execution of Jack. Arisa discovers stabbing the Queen is key to resolving the loop, though her initial attempts fail. She shows compassion, mourning characters who meet grim ends, even those who harmed her. She confronts revelations about her own past actions as the original Alice, acknowledging she was less considerate—ignoring confessions, dismissing friendships, and abandoning Wonderland out of boredom, actions contributing to the residents' trauma and instability.

Her interactions, particularly with Shizuku (now the Black Rabbit), reveal deeper lore. The Black Rabbit, originally the White Rabbit named Charles, created the school-world as a refuge after helping Alice escape the Queen. He claims no memory of being Shizuku, deepening Arisa's disorientation. Her relationships evolve across different endings. In some paths, she reconciles with characters like Chrono, preventing catastrophe. In Wonderland conclusions, defeating the Queen risks her becoming a heartless ruler. School-life endings involve her staying in the recreated world with the rescued inhabitants, fostering ordinary bonds. Her development centers on integrating her identity—embracing responsibility for her past as Alice while retaining Arisa's empathy—and actively working to mend the broken world and its inhabitants through forgiveness and understanding.