It's Nothing More Than Love

Both FLs are writers who due to their stories wind up in a fictional historical world where they must survive and return home. Along the way, they find true love.

Modern day woman ends up in novel.
Mini series with a novelist end up in a book and falling in love.Whiles trying to return home.

Both are mini dramas set in a virtual world in which the ML is the "system" and the FL is trying to change fate.