Because the name Mitsuba can apply to several distinct contexts, its age varies entirely depending on the subject. As an organization, Mitsuba Corporation was founded in Japan over a century ago, originating in 1946 as a manufacturing enterprise, making it several decades old. If referring to the herb mitsuba (Cryptotaenia japonica), individual plants function as short-lived perennials or annual crops grown seasonally. If your inquiry relates to a specific fictional character or person named Mitsuba, their age is defined strictly within their respective fictional narrative or personal biography.