Hotate Shinkawa (新川 帆立, Shinkawa Hotate; born (1991-02-21)February 21, 1991) is a Japanese writer, lawyer, and former professional mahjong player. Her first mystery novel, My Ex-Boyfriend's Last Will and Testament, won the This Mystery is Amazing! Grand Prize and was adapted for television by Fuji TV. Her followup novel, Guardian of the Market, was also adapted for television.
Source: “Hotate Shinkawa”, English Wikipedia (CC BY-SA 4.0), excerpt