Extra Content - Ryu ga Gotoku 4 Cheats Communication (kouryakutsushin.com)
There's a Japanese website about extra content for Ryu Ga Gotoku 4 on the Playstation 3 where the hidden game modes were removed in the remastered. As to my knowledge right now I'm just wondering if all of your upgrades can still go through in the premium adventure coliseum at Naomi's place best of luck for me hehe.
