Packing for Korea

Hello, im moving for a teaching job in Korea in the spring. I am currently trying to decide how many bags to bring with me for a year abroad. Ive seen many reccomend two large checked bags. I was wondering how much others packed in the past. Also is there anything that I wouldntt think to bring thats a must have in SK? Honestly I am grateful for any packing advice as I am a chronic over packer and dont want to carry any dead weight.