 In 2013, Bimal competed at both the 2013 SAFF U-16 Championship and the 2013 SAFF Championship (national team), where he made his mark on both tournaments.In the SAFF U-16 Championship, Bimal finished the campaign as the tournament's highest scorer.Also, in the senior tournament, Bimal was the youngest player to appear and score at the SAFF Championship, having scored his first international goal against Pakistan in injury time to earn his side a 1–1 draw.