Kayou Koukyuu no Hanayome Toki wo Koetara, Dekiai Heika!?

Synopsis

Princess Hisui married Shuo Yao, the 10-year-old third prince of a neighboring country. She attempted to escape but was trapped in a mysterious temple. After a night of escape, she finds herself ten years in the future! What's more, Shuo Yao is older, has become emperor, and declares he will take Hisui as his consort!? (Source: Kadokawa, translated)