The title suggests some out-of-this world apocalyptic comedy. But despite the cannibalist title, this is actually a cute, touching, sweet movie about love, life, and mortality.
Turns out the statement I want to eat your pancreas or any body part means you want to be like that person, and once you die, your soul will get into his/her body. Or something like that.
This is about two unlikely high school friends, Haruki and Sakura. Haruki, an introvert, was befriended by Sakura, a carefree girl with terminal pancreatic disease. One day Haruki accidentally picks a diary/journal owned by Sakura and she confessed to him that he was the only one, aside from her family, who knows of her illness. She shares her sentiments, her wishes to him, before she dies. Haruki tries to suppress his feelings (not romantic feelings) but at the same time gets amazed at the bravery shown by the girl, that despite her terminal disease still manages to laugh, make other people happy, find goodness in everyone, and just live life as if she had no disease at all. Together, they did her "things I want to do before I die". 12 years later, Haruki finds himself teaching in the same school, reminiscing his wonderful memories with Sakura.
Although there were scenes that alluded to a romantic relationship, what's undisputable about the plot of the story is that it is a touching movie about a blossoming friendship despite the travails of having a terminal illness. Sakura has a bestfriend, Kyoko, whom she hid her illness. She reveals she did not want her bestfriend to worry for her. The movie just manages to touch the depths of your emotions as you feel for your friend.
Overall, a touching movie. You won't be surprised if you find yourself shedding a tear here.