Talk:Recent Updates/@comment-26916893-20150825142024/@comment-26093926-20150825143700

It's the 6th main bullet of the changelogs (pretty lengthy too). It's for the people who pre-ordered the Mikazuki Munechika nendoroid to input their codes and receive their background

「 This banner, labeled "シリアルコード入力はこちら" (Input Your Serial Code Here), is located under the main game screen. This form will be used for all other promotions that include serial code bonus items. 」