All of Kurogane's NicknamesThis is a chronological list of all the nicknames Fai uses for Kurogane in the manga only. However, I did include their most recent appearance in the XXXholic special. I have indicated which chapter the name was used, the page# listed is the page on the Onemanga website, I marked if Kurogane protested the name (I included the ones Fai used out of his presence as well), and if he protested what he said.All of Kurogane's Nicknames5 years ago in Scraps More Like This
Excluding the times, Kurogane was not present to hear the nickname and the ones that were not clear as to whether they should be counted as nicknames there are 97 instances where Fai uses a nickname. Of those 97 Kurogane protested 19 times meaning only 20% of the time did he get upset.
I thought it would be higher but after the first 4 Kurogane didn't consistently get upset unless it was when he was called Father or Daddy. Kurogane for the most part only got upset when Fai introduced him using a nickname (no one else was allowed to