Tsujimura is an award-winning novelist, she is best known for her mystery and children novels. She studied at Chiba University and won the Naoki Prize in 2012 for Kagi no nai Yume wo Miru (I Saw a Dream Without a Key), and in 2018 she won the Japan Booksellers' Award for her novel Kagami no Kojo (Lonely Castle in the Mirror).