Both Kudo-san and Sato-san come twice a week and arrive at the dojo earlier than I do. By the time I get there, they already have the chairs and table set up and are doing their warm ups.
Sato-san just turned 79, making him the most senior in all of Meiryukan. But don't let the age fool you, Sato-san trained judo and is super strong and genki. He starts off every class practicing at least a dozen front rolls (with better form than a lot of the youngsters).
Kudo-san is the original Kasukabe member, starting 1 month before the rest. With a full collection of Ryu DVD's and plenty of time on YouTube, Kudo-san has been progressing rapidly as well as helping the newer students during training.