Not similiar, it's saquel. This is a very long long mini series. Ofc all the characters totally the same here.

Both "Skate Into Love" and "Our Dreamland of Ice" used the theme of ice skating, so the watchers might like something similiar.

Both tell about the palace story written by an author which later on the author turn to wake up as one of the character in the story that turned out very hilarious. TRoTaR is much better.

Read the synopsis and you will know why I add "Love in Time" (2015) as recommendation. I think the synopsis got similiar to this one after I watched this.

Both "See You Again" and "Someday or One Day" about time loop and both about saving their lovers. The different is one with camera when another with song.

Both "Mr. Fighting" and "Summer's Desire" shows the struggle of actors/actresses in entertainment industry. But, "Mr. Fighting" is male lead centred, while "Summer's Desire" is female lead centred.

The male lead both have a very long life due to 'something' they are trying to break out the mystery. There's also Estelle Chen.