煙か土か食い物18/Note about "Kemuri ka Tsuchi ka Kuimono" ("Smoke, Soil or Sacrifices") (You know absolutely no connection with real life and families)

Marikku perishes from the face of the earth, leaving the words below.

The only thing I remember and can recall is a voice of Marikku. Thus cried Marikku. Maybe it was done right before the accident, I guess. 

"Natsukawa, buckle up your seat belt!" (pp.240)*

*this phrase is used as a belly band copy of this book.