TV-Series
Description
Shūichirō Sawaki is the homeroom teacher and art club advisor at protagonist Ai Ohto's school, also the uncle of her companion Momoe Sawaki. He possesses lightly tanned skin, dark brown hair swept left, and a distinctive mole beneath his left eye, frequently wearing a bird-shaped brooch on his collar.

He maintains weekly contact with Ai's family, visiting her home ostensibly due to its location on his commute route to check on her well-being following her friend Koito Nagase's suicide. These visits extend to comforting Ai's mother, Tae Ohto, during Ai's hospitalizations. Sawaki and Tae eventually announce their romantic relationship to Ai over dinner, seeking her approval while expressing a desire not to cause her discomfort; Ai gives reluctant consent.

Ambiguity surrounds Sawaki's student interactions. A flashback shows Koito Nagase crying in his arms within an empty classroom, witnessed by Ai. This fuels speculation from characters like Rika Kawai that Sawaki may have had an inappropriate relationship with Koito, potentially contributing to her suicide, though Rika lacks concrete proof. Momoe Sawaki staunchly defends her uncle. He sketches Ai alone in the art room, commenting on her heterochromia—a trait linked to her bullying—and paints her portrait for a competition. This award-winning portrait depicts an aged-up Ai surrounded by red and white camellias, which Sawaki describes as representing her future self. At the exhibition, he compares this imagined adult Ai to her mother and reaffirms his love for Tae, causing Ai to cry before she confronts him directly about Koito's death.

Symbolic elements recur around Sawaki. Asters on his desk and the camellias in his painting carry potential meanings: white camellias suggest waiting or purity, red camellias signify romantic passion. His scenes are often visually framed with him looming over Ai or partially obscured by doorways and windows.

Within a parallel dream world narrative, a manifestation representing Ai's doubts and suspicions appears as the "Wonder Killer," taking Sawaki's form but with exaggerated mannerisms. Its true form is a large floating head with pale, wrinkled skin, a constant smile, and four paint tubes protruding beneath it. Framed as an antagonist derived from Ai's trauma in this reality, she ultimately defeats this entity.

Beyond teaching, Sawaki pursues an art career. After winning the award for Ai's portrait, he resigns to host a solo exhibition titled "Latent Heat." His artistic ambitions and personal entanglements position him as a figure of ambiguous motivations.