Cocoa Fujiwara was a Japanese manga artist and illustrator born on April 28, 1983, in Fukuoka Prefecture. She began her professional career at a remarkably young age, making her debut with the work Calling when she was only fifteen years old. Demonstrating an intense dedication to her craft, she chose not to attend high school to focus entirely on drawing manga. Early in her career, she used the pen name Fujiwara Milk and gained recognition by receiving an honorable mention in the 7th 21st Century Manga Awards in 1998. Her published works include Calling, Stray Doll, Watashi no Ookami-san, Dear, and the short story collection Ojō-sama to Yōkai Shitsuji. She was known to be close friends with fellow manga artists Jun Mochizuki and Yana Toboso, and she drew inspiration from role-playing games such as Final Fantasy, which influenced the fantasy elements present in her storytelling.

Fujiwara achieved significant commercial success and widespread recognition with her manga Inu x Boku SS, which was serialized in Square Enix's Monthly Gangan Joker magazine from 2009 to 2014. The series was adapted into an anime television production by David Production that aired in Japan from January to March 2012, solidifying her reputation as a prominent creator in the industry. Her other notable work, Dear, was published in Monthly Gangan Wing and was also adapted into two drama CDs. At the time of her death, she was serializing The Magical Girl and the Evil Lieutenant Used to Be Archenemies in Square Enix's Monthly Gangan Joker magazine, a four-panel romantic fantasy manga about an evil lieutenant who falls in love with the magical girl he is meant to defeat.

Cocoa Fujiwara passed away on March 31, 2015, at the age of 31 due to illness. Her death left The Magical Girl and the Evil Lieutenant Used to Be Archenemies unfinished, with its final chapter published on March 20, 2015. The third and final tankōbon volume was released posthumously on March 22, 2016, after consultation with her family. Nearly a decade later, an anime television series adaptation of her final work was produced by Bones, airing from July to September 2024, introducing her storytelling to a new generation of viewers. Her artistic identity is characterized by a blend of supernatural elements, romantic comedy, and emotionally complex character dynamics, often featuring fantasy settings with distinctive character designs. Fujiwara's career serves as an example of a creator who achieved professional success at a young age and left a lasting impact on the manga industry through popular works that continued to find new audiences through anime adaptations even after her passing.