Overview
ヽ(*゚д゚)ノKAIBAA is a tag used exclusively for Kurisu Makise related artworks for the visual novel and anime series Steins;Gate. It is an AA, and the emoticon itself is used when Kurisu tried to explain her certain theory to Rintarou Okabe.
It is unclear why Kurisu used this emoticon for, hence it is assumed that the AA represents her online personality, since it known that Kurisu is a channer.
The "Kaibaa" in this case refers to a Hippocampus. It is NOT in anyway related to him.