Blood type: A
Hometown: Tokachi, Hokkaido, Japan

Arakawa's career started with a one-shot titled STRAY DOG, but she is best known for creating Hagane no Renkinjutsushi, which she's received the Shogakukan Manga Award, the Tezuka Osamu Cultural Award (New Artist Prize) and the Shinsei Prize. Before creating Hagane no Renkinjutsushi she was Etou Hiroyuki's assistant writer for Mahoujin Guruguru.

She's a friend of Shakugan no Shana's author Takahashi Yashichirou, and also Segami Akira.

She gave birth to a son in 2007.

Aiya Kyu was an assistant of hers. Inariya Fusanosuke was possibly another assistant of her who became a BL mangaka in 2002.

Her self-portrait is usually that of a bespectacled cow, as she was born and raised on a dairy farm in Hokkaido with three older sisters and a younger brother. She worked as a farmer for 8 years before moving to Tokyo.