My dear fellow writers,
please keep in mind, that we play in a highly aristocratic world with a different cultural background. I do not want to make you run into the library and studying Japanese honorifics. All I ask of you that you stick to the Anime or Manga and try to behave the way people there do.
Breaking the rules of politeness usually is just used to show that a character is really upset. So remember to bow in front of your Captain, but don t hesitate to tease your classmates ;-)
Although there are exceptions, usually everybody lives a "Japanese" way of life, which means sleeping on the ground, wearing Gi and Hakama and just being fond of Calligraphy and Tea Ceremony (nooo... I do NOT mention Clichées here... nooo...!
). I am not an expert on these matters too, so I try to stick to what I see and read. Please do so too. Feel nevertheless free to adopt music, sweets or whatever from the real world, but keep in mind that the Shinigami regard themselves and their culture as the best one. So it is more like a "spleen" adopting the Western style of life and although not forbidden, it surely will receive some attention and comments.
I am sure you got the point
And now go ahead and have fun altogether!