Home › Authors › Hikaru Takagi 👤 Hikaru Takagi b. 1954 · 4 books Books by Hikaru Takagi Gyōseihō no sōten Gyōseihō no sōten 2014 Gyōsei hōgaku no mirai ni muke Gyōsei hōgaku no mirai ni mukete 2012 Gyōsei soshōron Gyōsei soshōron 2005 Kēsubukku gyōseihō Kēsubukku gyōseihō 2005