Shijikai Tarōbei served as a bushō during the Azuchi-Momoyama period. He was a retainer of the Ukita clan and governed a fief of 1,210 koku.
In 1581, at the Battle of Hachihama, Tarōbei repelled the Mōri clan and gained notoriety as a member of the Seven Spears of Hachihama.
In 1600, during the Battle of Sekigahara, owing to his age, Tarōbei, along with his younger brother, Shijikai Tarōuemon, remained behind in Okayama Castle to support the chamberlain, Ukita Munekatsu. After the defeat of the Western Army with whom the Ukita clan affiliated, Tarōbei assisted in turning-over Okayama Castle to Togawa Michiyasu and Ukita Akiie (also known as Sakazaki Naomori) without incident. He place of retirement is unknown.
Individuals who are descendants or relatives of Tarōbei with the Shjikai surname reside in present-day Okayama.