He was only one month older than Iyama Yuta, making him the second youngest professional in Japan.
This also made him the youngest Kansai Ki-in professional, edging out Yuki Satoshi by a small margin.
Murakawa is the youngest ever tsumego (life and death) problem creator and number created.
His rival is Iyama Yuta from the Nihon Ki-in whom he defeated in 2014 to become the Oza title holder.
This biographical article relating to a Japanese Go figure is a stub.