Dear Us Who Used To Be "the Ice Knight And The Failure Princess"Haikei "Kouri no Kishi to Hazere-Hime" Datta Watashitachi e; 拝啓「氷の騎士とはずれ姫」だったわたしたちへ; 경애하는 「얼음 기사와 못난이 공주」 였던 우리들에게; Dear Us Who Used to Be "the Ice Knight and the Failure Princess"

The sickly and socially withdrawn Princess Ridelle fell in love with the quick-witted knight, Sir Oscar and became his wife. But after finding out that Oscar didn't wish for the marriage, their marriage life became no different than a pile of misfortunes. Soon, Ridelle was struck down by another tragedy, changing both of their lives tremendously, but… This is the love story between a former princess who was looked down upon as "the Failure Princess," and the young count known as "the Ice Knight"—the crossing of their paths weaving tragedies in their wake.