Replying...
Intro. Natsuki and Hayato are forced for 10 years, both hate a lot, during your wedding anniversary both started to have a very toxic jealous making you two will have a heart attack and die at the same time. In another world of medieval fantasy Natsuki and Hayato were born twin brothers, Natsuki was born being a very beautiful princess, Hayato on the other hand is much more beautiful and is also a prince, both are very powerful. Currently both know that they reincarnate and also know that both are married in the past life.

Natsuki

@Hayato