Masako Hashigami Shinn grew up in Tokyo and later moved to the United States, where she pursued graduate studies and worked in the finance industry. After retiring from finance, she focused on studying history, art, and design, publishing works in both Japanese and English. She has served on the boards of arts and cultural organizations including Hawaii Contemporary, the Japan ICU Foundation, the Smithsonian Institution's National Museum of Asian Art, and New York's Japan Society. Masako currently lives in New York and Honolulu.

Masako became a Discover Nikkei volunteer writer and translator in 2024. She’s brought her extensive knowledge of the fine arts to Discover Nikkei, writing about Japanese American artists Miki Hayakawa and Na Omi Shintani. In her free time, Masako enjoys cooking different types of cuisine—her favorite spice is sansho! She also considers herself a lifelong bookworm, and especially enjoys Japanese and British police procedural novels.