It's In The Way That Kagura Calls Him Gin-chan, And In The Way The Shimura Siblings Call Him Gin-san.

It's in the way that Kagura calls him Gin-chan, and in the way the Shimura siblings call him Gin-san. Tama calls him Gintoki-sama. The Shinsengumi (especially Sougo) call him Danna. Hijikata calls him Yorozuya even after the reveal of the White Demon moniker. [He judges Gintoki on his present deeds and not the past and that alone can fill pages]. Umibozu acknowledges him as Kagura's earth parent and Kamui refers to him as Kagura's brother, Abuto lumps him with the rest of Kamui's dysfunctional family. Shoyo-sensei, Katsura, Sakamoto and Takasugi all call him Gintoki (Sakamoto is doing his best). I don't know where I'm going with this but Sakata Gintoki is loved and