Second Season of Waikiki & The Sound of Your Heart Reboot, both fall under the "They Changed the Cast" umbrella. The only difference is Waikiki retains the funniest character for Season 2, but other than that both shows always draw comparisons to the original, but treating them as their own entities, makes them a lot more enjoyable. Both shows are sitcoms where the main cast ends up in wacky situations, and we get to watch how it plays out.
Recommending Gaus Electronics to those who have watched Laughter in Waikiki 2. As mentioned in my other recommendation for the Season 1, both had this brand of humor in failure that as a viewer, we can't help laughing out loud how some situations gets silly and misunderstood. They both have romance too and I would say the couples in both dramas have really nice chemistry.