The grandfather is named Yasukuni and has World War II flashbacks. The Yasukuni Jinja, or Yasukuni Shrine, in Japan, is dedicated to those who died in WWII.
The literal translation of the Japanese title is "Back-Firing Family". "Gyakufunsha" means "thrust reversal", but is also used as a slang term for "crazy" or "screwed up."
Yûki Kudô's debut.