The Fusui Master Jinpu had just saved Kenshin, they return back to the dojo and he explains everything. He shows Kenshin the map and tells him that his clan had an Eigou formation that would protect the town, the water clan also wanted a formation but the both would conflict, so they tried to destroy the Eigou formation. Now the water clan has come back and is creating their formation. It has already start and the water clan has attacked the dojo now the dojo and the restaurant is no longer needed and the formation has already begun. (thetvdb.com)