Schwi was the first Exmachina to show up in Tet's world, and she's best known for her quest to understand what makes humans tick—specifically the concept of the "heart." Riku discovered her, and from there she becomes central to the story.
Visually, she looks mostly human but with telltale machine features: two tails sprouting from her back and various mechanical parts visible around her body. Fans often note how much she resembles Shiro in appearance and mannerisms.
Personality-wise, she fits the AI archetype perfectly. She can instantly absorb and process massive amounts of information and react accordingly—something that comes naturally to her race. Where she struggles, though, is with emotions and desires. She's aware of this gap and even calls it "the heart," acknowledging that understanding it remains beyond her current capabilities, which drives much of her character arc.
Content compiled by AnimeList.moe from publicly available sources.
