Inojin is one of two adopted pups that belong to Ino and Sai (Mask Like Smile). At the time they picked Inojin up he was a rather small and weak pup with nothing on him. However with proper care and love provided by the two Inojin quickly started to grow and fill out. It wasn't long before he started to dwarf his sister Primrose (Promise Up Held). It became painfully obvious around the age of 1 Inojin was no normal Tokota so they set out to the hidden village. In was here, in the heart of the wilderness, they confirmed Inojin was infact a 50% dire. 

Despite being a somewhat obedient individual Inojin is somewhat indifferent to those around him. He has very little care about the emotinal state of others, nor how his words will effect them in the long run. If something needs saying he'll certainly be the guy to say it. 

Despite this Inojin is still a caring individual toward his family. He is quick to bare his teeth and show his true dire nature should someone threaten them.