Had a look at the Blu-Ray myself (so I could see it without the screen's BGR elements from your pic). Judging from the logo and the writing I could make out ("VG-10 33 Layers Damascus" and "Made in Japan"), I'm guessing it's one of
these Suncraft Senzo knives, possibly the Sashimi knife:
View attachment 666009
Edit: the image of the same knife posted on Amazon looks more like the one in the film (much lighter details in the hammer marks and fold lines):
View attachment 666010