Special Forces Group

The Special Forces Group (Kanji: 特殊作戦群, Tokushusakusengun) is the Japan Ground Self-Defense Force's counter-terrorist special forces established in 2004 by the then Defense Agency to counter terrorist activities and deter guerrilla-style attacks on Japanese soil and to conduct military operations against guerrillas or enemy commandos. The unit is based in Camp Narashino in Funabashi, Chiba along with the 1st Airborne Brigade.

The SFGp has been referred to as Japan's Green Berets and Delta Force, due to their specialized role in the Japan Ground Self-Defense Force.

Personnel from the Delta Force of the U.S. Army had been responsible for assisting the Japan Ground Self-Defense Force in raising the SFGp's foundations prior to its establishment.

In Project Zero-X, there are 3 characters formerly associated/serviced SFGp, Ayato Tokouryo, Uchino Hakazaki and General Hirashi Hishikimori, with the latter then became head operator of Team Alpha and later the antagonist of the series.