Sasamirise

The tomboyish imperial consort Licia married her childhood friend, First Prince Gieselbert, but after three months, their marriage remains unconsummated. Troubled by her relationship with him, a man plagued by dark rumors of killing his own brother, she drinks a mysterious tea one day and shrinks into a five year old child. ​When Gieselbert sees her sudden five year old form, he mistakes her for her own secret illegitimate child. Driven by anger, he sets out on a wild search to find the non existent father