Tomari was born in Nagoya on March 26, 1990. After graduating from Osaka University of Health and Sport Sciences, she joined Urawa Reds in 2012. In 2015, she moved to AC Nagano Parceiro. She played 61 matches and scored 19 goals. In 2018, she moved to Austrian Frauenliga club Wacker Innsbruck. In 2019, she moved to German 2. Frauen-Bundesliga club Cloppenburg. In 2020, she returned to AC Nagano Parceiro.