He is one of the youngest players and first from Arunachal Pradesh in history to be selected and debut in the I-League Qualifiers, at an age of 16 years and 359 days.
[1][2][3] Hailing from the town of Naharlagun in Arunachal Pradesh's Papum Pare district, Nikum started playing football at the tender age of 8.
[4] On 2019, Nikum achieved a career milestone when he was selected for the Arunachal Pradesh team to play in the U18 BC Roy Trophy, where they made it to the semi-finals.
[4][5] On 20 October 2021, Nikum became one of the youngest players and first from Arunachal Pradesh in history to be selected and debut in the I-League Qualifiers, when he appeared against Madan Maharaj, at an age of 16 years and 359 days.
[7][8] On 22 January 2023, 18 year-old Nikum joined Mumbai City for a reported transfer fee of ₹6–7.5 million on a four-and-a-half-year contract, with an option to extend further.