The Hikari Kikan was the Japanese liaison office responsible for Japanese relations with the Azad Hind Government that replaced the I Kikan. It was initially headed by Colonel Bin Yamamoto, later replaced by Major-General Saburo Isoda.
- Chandra Bose to Nihon. By Joyce C. Lebra; Horie Yoshitaka; Fujiwara Iwaichi. Tokyo. Hara Shobo. 1968.
- Four Lankans die in secret 'independence' war, Janaka Perera