The show is extremely short. I didn't know how to feel about the 5-7 minute run time but honestly it did not really upset me because it's not filling 40 minutes with half the episodes being recaps.

The only time they did a recap was in about 2/30 episodes which condense the time a lot. Honestly the time limitation does impact things like character development. You don't really get to know a lot of about the characters which is a double edge swords you don't get invested in character so they can easily do a bait and switch of the bad guys.

The main characters seen interesting but the 4th sister has so little to do with the plot that they could have left her out. The love story was actually pretty decent I think it would have been better if they took each episode to focus on a different sister doing thing to progress the plot and woven their love stories into it. It just feels kind of cheap to be left on a cliff edge wondering about the other sisters.

Also they do not resolve the main plot of the trade secret its left up in the air. Which honestly with as short as the episodes and as long as many episodes as most shows in this genre has they could have easily not stop half way through what is typical the first 15 episode of a standard 30-60 min run time show. So I can't cut them slack on that aspect.

If you want a short show to just fill a few minutes, or waste a few hours on this is an okay watch especially if you don't like sitting for longs periods of time.