Suspect X

Yup, confirmed that my memory is crap XD

I mean, it was more about it being vague than wrong.... I think? 

(probably became vague because I was crying at the end)

Anyway... Tsutsumi-san definitely stole the show IMO! Like, the others were good too but every time he appears, I keep getting impressed by his performance. 

Some details are different but it's pretty faithful to the book (maybe like 90-95%). Loved that. Definitely recommend watching it if you liked the book. Probably will be more fun to go through the experience like me: Watch movie → Read book → Watch movie again

Did notice that they tried harder to make Tsutsumi-san's character suspicious in the movie... I actually laughed a bit at that part involving climbing and snow because it's so obvious.