Responses
Well, actually there is one with ex-rivals-new-lovers but it's not otome, just normal world...
http://www.mangago.zone/read-manga/film_emperor_s_reincarnation_script/
Thank you (づ￣ ³￣)づ
Why? Oh why? Why there’s no isekai-yaoi story, where the two rivals ends up together? If there’s actually one please let me know