As everyone knows, you need to keep immediate and remorseless pressure on Japan to win. He will beat you in a boomfest, so you need to get cracking on him right away.
I do a standard German colonial 17-vil age-up. On hitting the Age button (Quartermaster, of course), I put 3 SWs and 3 vils on wood, rest on food. I queue 2 vils during the interim and put the rally flag on wood, which you will need for xbows/pikes. Before you age to 2, you should have built a market and a house. Get gangsaw, hunting dogs and Great Coat (you never know! and for 75 food it gives you 405 HP SWs... a good buy imo). Send 1 SW forward for a FB. As soon as you hit Age 2, send 1 wood SW to the crates and use the forward SW to build a barracks. At the same time, send 9 Xbow. Build houses up to pop 50 and queue 5 xbow. They should be coming out as soon as your 9 xbows are marching forward, so you will have 14 xbow by around 5:30. Advance on his base and pick off as many vils as you can. Force his vils inside. Meanwhile, train 5 pikes and send them against his big shrine or a barracks (if he has one). After that, spam xbows and ruthlessly circle his base, shooting any vils who dare show themselves. Don't be afraid to take some TC fire; you should have a constant stream of xbows supplementing you. Build houses as needed. Every moment you keep his vils indoors you get closer to victory. Your next card will be 3 doppels. Join them with your 5 pikes to get a good siege going. Before long his shrine will be down. Use your free uhlans to circle his base and act as meatshields if need be. Naturally, you'll be spamming vils the whole time... at some point you will send more onto food once you have the wood stream you need for troop production.
The idea is to strangle him from his cherry orchards and mines, but if he gets sassy and somehow manages to muster some nagis, use your doppels and pikes to slice 'em up.
This strat requires constant spamming and quick pressure. I wouldn't recommend it if he goes Torii gates, which usually indicates an immediate musket rush. This strat is intended to kill Jap shrine boomers. I like it because it is relatively straightforward and requires a simple, 2-resource econ. The only gold you will need is for hunting dogs! And this is one of my only German strats that does not involve my beloved uhlans as major player. I learned my lesson... uhlans lose to ashi/nagi
