The Crazy Family (1984)

The Kobayashi family finally get the chance to move out of their tiny, cramped Tokyo apartment in favour of the suburban house of their dreams. But all is not well: the house is infested by termites and the family starts cracking up: Son Masaki is studying so obsessively for his exams that he's losing his mind; daughter Erika is oblivious of all but her forthcoming record company audition, grandfather Yasukuni starts getting World War II flashbacks and father Katsuhiko is so worried about his family's "sickness" that he thinks can only be cured by group suicide...