Dang district
Sen was born in India in 19 October 1956. His father served for Indian Army. His mother was Bhim Kumari and father was Yam Bahadur Sen. Upto the age of six, he was raised in India. In 2019 BS () he returned Nepal and studied Adarsha Secondary School of Deukhuri of Dang district. Sen's ancestral home was at Sarangkot in Pyuthan district, they migrated to Jaluke in Arghakhanchi District before he was born. He passed 10th grade from Saraswati High School in 2032 BS (). He passed Intermediate in Arts from India as a private student.