Gaku Nakajima

About

Gaku Nakajima is 60 years old and the head of the Nakajima family which is 3rd in the hierarchy of the Yakuza families of japan. He and Renji's friendship goes a lot of decades. He trusts renji and it is mutual. He wishes to strengthen family ties by marrying into each other. He has made peace with the fact that his grandson is no longer alive and takes kirishima to be his grandson. He thinks of kirishima as his own thus his betrayal does more emotional damage to gaku. Gaku is unaware of Kirishima being a bug in the family and treats him with love.