In ancient times during the Heian period, Princess Shizu and oni Shuri fell deeply in love and got married. Tragically, the princess died young which caused the oni to turn into stone out of grief. Fast forward to the present day where we meet high school girl Shizuko on her 16th birthday. On this special day, she is confronted by Shuri who has awakened from his stone form and claims to be her husband. It is revealed that Shizuko is the reincarnation of Princess Shizu. Overwhelmed by this revelation, Shizuko is unsure of her feelings towards him. Despite this, Shuri expresses his eternal love for her and vows to do everything within his power to win her heart once again, just as she loved him in her previous life.
Shizuko wa Ore no Yome is based on Sana Kirioka's 2012 doujinshi of the same title.