I would not worry, there are games like this that have been around along time that still aren't completely dead. For example bleach online has a very large amount of servers and the game is not 100% dead-(although sadly most servers are dead), there are still many servers that are still kicking and are very active. Even if your server dies someday that does not me*l of them will and there is a large amount of activities that you can do in this game that are cross server. Until then don't worry and good luck with the second hokage!