It's so bad. It's trying to have the humor and art of 100 girlfriends as well as the plot of Quintessential Quintuplets, but it can't hit any of those marks. The jokes are too drawn out. The girls are cute, but there's nothing interesting about them.
Even the character traits that they were given are so stupid. Oh, she's the smart one, she's the cute one, etc. Now, let's not pussyfoot around. The last girl seems like the likely winner as she's the one who was given a flash back leading up to this promise. All the others were given a page or two at most with the most generic development.