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Japan is one of the notable countries mentioned in the series. The country holds 21 high ranked hunters and one of them is Goto Ryuji. They used to be one of the most powerful country in the world as they boast a numerous amount of strong hunters but after 7 of their hunters died in the Jeju Island Arc, Japan weakened. This also puts into bind in the country after a huge gate opened in the sky of Japan, forcing them to cry help on other countries and ended up with a deal with the Russian S-Rank hunter Yuri Orloff. The gate went dungeon break after Yuri failed to maintain his barrier and was killed by the giants. 29 giants left the gate and 1 million people died. The giants were stopped later only after Sung Jin-Woo appeared and killed them.
- Draw Sword Guild - Goto Ryuji (Guild Master)
- Black Hole Guild
- Undefeated King Guild
- Snowy Mountains Guild
- Defected - Suzuki