A friend of a friend said that she found another of Sakugawa's comics to be very sad. I agree, but I think they are my favorite kind of melancholy: the kind that reminds you that, however impermanent this world is, there is a place for you in the universe. You belong here.
Intergalactic Telepathic Pen Pal very much embodies this sentiment. It is a collection of Sakugawa's short stories, many of which deal with death and endings. From the sudden inexplicable spaceship departure of family members in "Happy Birthday, Lisa" to the self-reflective grief of "Cigar Butt", these are stories that are very sad but also a reminder to breathe and that you are not alone.