The Iranian team defeated India 48-17 at the Al-Saada Indoor Hall in Salalah, Oman in Group D.
The Persians will Yemen and Oman respectively on Tuesday and Wednesday.
The 2018 Asian Men's Junior Handball Championship is the 16th edition of the championship, scheduled for 16 to 26 July 2018 at Salalah, Oman under the aegis of Asian Handball Federation.
It acts as the qualification tournament for the 2019 Men's Junior World Handball Championship.
Top three teams from the championship will directly qualify for the Junior World Championship to be held in Spain.