The male lead in Tomorrow With You travels to the future in a very similar way Park Dokyung from Another Miss Oh has visions of the future.

The biggest difference between the two I would say is the comedy. You won't find as much comedy in Tomorrow With You, though it is a very sweet drama so far.

Both dramas have a similar feel, the way the OST is played in Descendant of the Sun, it brings out all your inner emotions, and it reminds me a lot of You Who Came from the Stars.

China is obsessed with both dramas to the point that nobody should be obsessed, so maybe you will get obsessed too^^