Ryuji Saki
佐木 竜二
About
In "Kindaichi the Killer", Ryuji Saki, who very much resembled his elder brother, Ryuta Saki, approached Kindaichi at a party, telling him his elder brother told him in a dream that Kindaichi would be in trouble. Soon after, Ryuji helped Kindaichi avoid a murder rap. Afterwards, Ryuji claims himself as Kindaichi's assistant and sometimes really helps Kindaichi in solving cases (Wiki).
Appears In
The Kindaichi Case Files
Kindaichi Shounen no Jikenbo: Tanpenshuu
Kindaichi Shounen no Jikenbo: Case Series
Kindaichi Case Files: The Mini-Vacation