Hae Kang graduated from Yonsei University in Seoul. He specialized in the Academy for Young Singers of the Opera in Hannover and Conservatorio di musica Giuseppe Verdi in Como. Since 2021 he has been studying with Raina Kabaivanska in her master classes at New Bulgarian University and Music Institute Vecchi – Tonelli in Modena. Hae Kang is a three-time scholarship holder of Raina Kabaivanska Fund at New Bulgarian University (2021-2023). In 2023, he won first prize at the 59th edition of the Voci Verdiane International Competition in Busseto. He also won first prize at the Gaetano Zinetti Competition and second prize at the Piero Cappuccilli Competition. He debuted as Scarpia in Tosca at Opera Pienza, as Marcello in La Bohème at Sofia Opera and Ballet House and at Teatro Lirico di Cagliari, as Rodrigo in Don Carlo at Teatro Galli di Rimini, as Amonasro in Aida at Sofia Opera and Ballet.