Each region of Japan has things they consider to be the norm, but what seems like the norm for people of one region may not be the norm to those of other regions. Jin, Yatogame, Tadakusa, and Sasatsu share some of their own "norms."
things that are the norm to Japanese 
people are just the norm to them.
الأشياء التي تعتبر عاديّة لليابانيّين
هي الاعتياديّة لهم وحسب
ciò che è normale per i giapponesi
è normale solo per loro.
coisas que são óbvias para os japoneses,
 são algo necessário para eles...
норма всё, что считается
нормой для их жителей.