They introduced two new character in this episode, both who are very interesting and unique. Their dynamic is almost similar to Ramune and Kuro, but I feel like they're on a cooler side, while Ramune is always chaotic and loud. But overall it made the episode more interesting, seeing all four of them fought the demon together. I hope they will show up more in later episodes. Regardless, this was a good episode and a must watch! If you skip this, you might not understand who Granny Ayame and Nico are.