No. The concept of a savior, referring to the one who will come to save the people from oppression and injustice, is common amongst various theologies, though they differ about who the savior is. The savior in Zoroastrianism is known as “Sosyant”, in Hinduism as “Kalki”, in Buddhism as “Maitreya”, in Judaism as “Moshiach”, and in Christianity as “Messiah”. The savior in Islam is known as “Mahdi”, and all the Muslims, regardless of their sects, believe in him. There are frequent narrations from the Prophet about the Mahdi in ‘Kutub al-Sittah’, the primary books of narrations in the Sunni sect of Islam. Also, various books have been authored throughout history by non-Shia Islamic scholars about the Mahdi. All of the Muslims believe in the Mahdi, who is from the progeny of Prophet Muhammad (PBUH), and has the same name as him. The Shia Muslims believe in the Mahdi as their 12th Imam, who was born in the year 256 Hijri in Samarra, and is still alive.