Kivu'raw'nuru underwent the ceremony sometime around 39 BBY, detaching him from the Kivu family and rematching him with the Mitth. During the ceremony, Thrawn first met Thrass, whom he would later regard as a brother.
Mitth welcoming ceremonies were first mentioned in the 2020 book Thrawn Ascendancy: Chaos Rising by Timothy Zahn, but they were not named until the release of Thrawn Ascendancy: Lesser Evil, which came out the next year.
Mitth welcoming ceremonies were first mentioned in the 2020 book Thrawn Ascendancy: Chaos Rising by Timothy Zahn, but they were not named until the release of Thrawn Ascendancy: Lesser Evil, which came out the next year.