The game is fully voiced by the original anime cast, including Mamoru Miyano (Tamaki) and Maaya Sakamoto (Haruhi).
Here’s a concise review of the Ouran Koukou Host Club DS game’s English fan translation patch, based on community feedback and technical status: ouran koukou hostbu ds english patch work
If you own a legitimate copy of Ouran Koukou Hostbu (the Japanese DS cart—yes, it’s region-free), here is the process that translation purists recommend: The game is fully voiced by the original
As of , the Ouran Host Club DS translation patch is complete and playable from start to finish. ouran koukou hostbu ds english patch work