Honestly this was really disappointing to watch. There are so many parts that just don't make any sense. Why is derek physically struggling in a fight against Allison when she's trying to stab him? Why are they trying to fight oni knowing already the only thing that can kill them is silver?
I was expecting the characters to be more adapted now and have a lot more experience but it seemed to be the opposite.
I personally was in fit's with laughter when Derek's son decided to just randomly run into the oni and get stabbed pmsl
I think the main problem for me is that it's focused around Alison and I personally don't like the character at all, I thought she was so annoying in the series and so when the film is about them trying to save Alison and I would happily watch her die again its frustrating. Also don't think they should of used the nigitsene without stiles. With stiles not returning I think they should of use a different antagonist.