Hi, just shot gunning things as I think of them.
You should have the map explored to a larger degree by 520AD. Send out boats early, the more civs you know the better it is for you. Discounts on tech research for techs they know. More trade opportunities.
I think you should have use the slider to get more pop back to work. Kyoto should be a real city long ago. 10% on the happy slider would put both
citizens back to work. The impact over time of the game would be large.
Nara should have been founded on the forest next to the lake. You would save the aqua build and you get access to water right away. Send workers to get the water flowing to all my thirsty towns.
You have to have more land and you had SoZ, so running over America would be no problem.
Take care about building structures, just because you have the tech. Tokyo is not growing and would need a duct to grow over size 6, so it has no
need of a granary. Doubt it needs a courthouse as it is next to the capitol.
I would not build HE in Kyoto, build it some other town and make swords for war.
I do not know, if it would work, but I would be desperate, so I would have dropped a settler on the hill next to the mountain by Kyoto and try to irrigate a grass tile. If that worked, I would then abandon the town and spread water. Now you have access to water from the lake, so all my workers would be busting butt to get it to all my towns. Not making mines, I need more pop and that leads to more of everything.
I would not attack Montie, my target would be America. Raise a lot of units and smash him. I would research my must have tech Feudalism. In prep I would build some swords that could be upgraded to MDI. You have spears that can become pikes add in more cats and roll over Abe.
Problem is your econ is bad, due to not having cities and tile improvements. Towns are just too weak compared to cities.
Put the tundra towns on units or wealth or workers, no structures. I would not have build anything in Nagoya, just put the lone pop to taxman.
I do not like to have a lone spear in those three tundra towns, I prefer a sword. It can attack.
Edo is the second most productive shield producer and should have had an aqua already. It could then be working on a prebuild for Sun Tzu.
I do not build structures, until they are cost effective or they are critical. IOW, no lib in a town that is never going to make enough beakers to warrant one. A bank, but the town is not going to make money, without a lot of investment.
Drive expansion first, research but not recklessly. Growth, but not at too high of a cost, such as granary in every town. Evaluate the shield cost against goals and time.
Mines in towns that very corrupt or you are at the stage where you want beakers more as you have enough production centers.
You are in position that you should be able to take down Abe, but you need more troops and more bombardment. Stacks of swords and cats, with a few spears could do it.
(I wrote that, before finding an AC army and several AC's wasting time way off in the distances.)
Go through each town and see what they have and, if it makes sense to keep it and what they do not have, but need. Take Izumo, it is working a mine and will not grow for 17 more turns. A lot of lost time. Three shields, but nothing is in the queue so they are useless. Working the phant yields one extra gold. Still have the 3 shields and 1 food. I would sell the temple, you already have over 100 culture. Save 1 gold per turn. Unless I have to compete with culture of an adjacent town, 10 culture is enough. That is 128 gold you lost. Actually I would have never built the temple as the town is not going to need it. I would drop another town behind it eventually. It could be making cat as the do not need a barracks.
12 workers 12 towns, but the towns are more than 3 tile apart, so more workers are needed. A worker on 58.20 is building a mine? That tile cannot be worked by Kyoto and Nagoya is not growing, so will not work it either.
Yokohama not growing and has 24 shield into a temple. No real need to expand its borders as eventually I would plant a town in its backyard and raze Cinny. So what to do with those shields? No barracks, but a reg sword is better than a vet warrior and cost the same upkeep. A worker never a bad idea this early in the game. Many choices, pick one. I would pick a sword as I do not know if Cinn is gong to send out a unit at some point. You are making 6 uncorrupted shields, but to do with them? Hard to say, maybe a rax and then swords. If so, switch to rax instead of sword.
Satsuma working on a 100 shield market for 4 pop? Not growing. One citizen is working a bare tundra tile. At least move to a road and gain shield and gold or coast. Net gain of 2 shields and 1 gold from road/forest. I would look at selling the temple, town is not growing. May not be the right move, did not eval it.
I am more into fighting, so CH is not an early build for me. 80 shields so early to gain back one seems like a long time. Later I can build it faster and get more for it. Early game on a frontier town, it is not what I want. Give me a wall and a defender or a cat or a worker or settler. Looking at Nagasaki 13 turns till goes to size 6. One reg spear and no wall in Nag, makes me worry.
Three workers mining, for sure get them to Nara and cut that tree and get water moving.
Just my .02 and one of many options.