Sweet, another serious episode! But this episode focuses on the big plot where Niiya and Yuuko forget each other for the entire time. Meanwhile, surprisingly, Shadow Yuuko does not interfere much during the plot but she does show herself. Besides that, we just get more romantic focus and some character development. So once again, the series so far is in a great pace and I liked how more and more serious plots are showing up with actual horror. Anyway, other than that, this is just another build up and I don't have any much thoughts (again). Though, it seems like Shadow Yuuko will play a big role on the next episode. Overall, cool build up and sweet plot.
Conclusion: Nice build up and sweet serious plot.