I am going to share my recipe of Chicken Karaage (Japanese style fried chicken). Karaage is commonly cooked and eaten everywhere in Japan. Meanwhile, I was born in the city called, Nakatsu, Oita, in Japan. Our city, which is known for its original recipe of Karaage. I am going to share the recipe that I grew up with. :)http://www.visit-oita.jp/sightseeing/oita_history/nakatsu.e.html
You want to marinate chicken the day before you cook. To prepare marinated chicken, it will only take 20 minutes or so. You keep it in your fridge, and cook it on the next day. If you cannot prepare the day before, I would recommend to marinate at least 2 to 3 hours.
Please prepare the following ingredients the day before if possible because you would like to marinate your chicken for a night. If you roughly keep the following ratio, it would be fine. This is not a science. :)
To marinate 1 lb of chicken:
1 lb of chicken thigh with skin, without bone (not included in the photo) 3 Table spoon of Soy sauce 1 1/2 Table spoon of Sake 1 Table spoon of Sesame Oil 1.5 to 2 inches of Ginger 1 clove of garlic 3 or 4 little shake of Ichimi Togarashi - Japanese chili (A little red bottle in the photo) Container or a ziplock to keep marinated chicken in a refrigerator (not included in the photo) If you like ginger and/or garlic, you may add more.Please try to get Katakuriko from Asian grocery stores, but if you cannot get one, regular flour would be fine.
You can also get Ichimi Togarashi from Asian grocery stores.
As for Sake, cheap sake is perfectly fine for cooking. You can get a cheap large bottle at a Japanese grocery store. 1.6L only costs about $10.
Fried chicken is one of my favorite foods! This is my recipe for homemade chicken karaage. There is some prep work involved, but it will be worth all the hard work once you taste it. 
Here are the ingredients you'll need: