How to find Japanese Ancestors?

Amanda Tobias

My grandmother I believe was born in Japan. Her father served for the Japanese military in Palau and she was left behind when her mother and siblings moved back to Japan after world War 2. She was raised by a Palauan family and has a birthday different than her original one. I only met one of her brothers Koichi Takeda. I don't know how to find the family and I did a DNA through ancestry.com

Richard E Mason

Do you have more information? Specifically where she might have lived or was born. Also go to the Japan wiki and that will help you get the information you need.