TV-Series
Description
Aoba Karabayashi is a member of the idol group HY:RAIN in the Shine Post multimedia project and the older sister of fellow member Itoha Karabayashi. Her given name combines the kanji for "blue/green" (青) and "leaf/plane" (葉), while her surname "Karabayashi" means "T'ang/China" (唐) and "forest" (林).

She joined HY:RAIN during its formation at Rainbow Management alongside Itoha, Yawara Naekawa, Nanoka Hiumi, and founding members Haru Nabatame and Ren Kurogane. The group rose to become one of Rainbow Management's top idol units. After Haru Nabatame departed due to her exceptional talent inadvertently overshadowing other members—particularly frustrating Ren Kurogane—Aoba remained with HY:RAIN.

At 17 years old, Aoba stands 1.65 meters tall with ochre hair and golden eyes. Her birthday falls on November 11, and her blood type is AB. She maintains a reliable, cool personality that reflects her role as the group's stabilizing older sister figure.

Aoba appears across Shine Post media as part of HY:RAIN, including the anime adaptation, light novel, and manga. In the video game "SHINE POST Be Your Idol!", she is one of 23 playable idols, performing with AI vocal synthesis technology from Techno-Speech, Inc. Her primary relationship centers on her younger sister Itoha, and she serves as a foundational member of HY:RAIN following Haru's departure and subsequent member recruitment.