The longer feudal goes as Japanese gets their daimyo manor levels up, even with the first and the melee upgrades on those horsemen, their horsemen with the Uma Bannerman are going to be just straight up better than the Ghazi Raiders against each other. The Yumi quite similar as well. If they have that Yumi Bannerman will just be better than Delhi's archers.

Japan seems like a civilization that has a lot of very strong tools when it comes to dealing with Delhi at least in Feudal Age. Later on it starts becoming a little bit harder when we start seeing the elephants come out, but at least early on, units like the Onna-Bugeisha feel very solid at denying sacred sites from Ghazi Raiders.

Once you get to Castle, everyone wants crossbows. Japanese don't really have a crossbow unit; only Onna-Musha kind of fill that role but not as efficiently. So get that crossbow transition going quickly.