Itsuwa (五和) is a character introduced in ToAru Majutsu no Index: Old Testament. A seemingly shy girl of the Amakusa-Style Remix of Church at first, she later shows her mettle and effectiveness as an ally of Kamijou Touma (on which she has a notable crush).
Her name is derived from the real world town of Itsuwa in Kyūshū, which was later merged with other towns to form Amakusa City in 2006.
Itsuwa is described as a young Japanese girl with black medium hair. She wears her hair in a bob cut with short fringes. Kamijou Touma, upon first meeting her, references that she has double eyelids, the first feature he noticed on her.
Itsuwa has a large breasts but is referred by her Amakusa comrades as hidden. Her clothing consists of things that allows her blend with her surroundings more readily, such as her pink tank top-capris combo or her tank top over sweater with brown pants that seem to be cut apart. During her mission in Avignon, she was forced to wear skimpy clothing because she had nothing else to wear after jumping into the river to save Touma.