Sae-chan transfers into Yuna's class during the second season, relocating from Kobe to the island where the main characters live. She exhibits a distinctly girly personality, frequently engaging in conversations about fashion, beauty, and romance, occasionally displaying ditsy behavior. Her admiration for Yuna's fashion sense—which reminds her of her mother—sparks their friendship. Her mother designs tropical fashion, while her father works as a doctor. Despite her sweet and gentle demeanor, she demonstrates bravery akin to Yuna's.

Within the group, Kouji (Kenny) develops an unspoken crush on her, which she does not notice. Conversely, Piko (Penny) secretly resents her due to jealousy over Sae-chan's fashion sense.