Mikihiko Hisanaga was born around Tokyo. He seems to have also lived in Fukuoka, Saga, and Saitama during his childhood. In 2017, he made his debut with “Nanajūyonbyō no senritsu to kodoku (In Your Blue Eyes),” which won the 8th Sogen SF Short Story Prize. He was selected as a finalist for the Japan SF Grand Prize for two consecutive years with the fix-up novel named after his award-winning short story, Nanajūyonbyō no senritsu to kodoku (In Your Blue Eyes and the Ma.Hu. Chronicles), and “Watashitachi no kaiju (Kaiju Within),” which had been published in the 6th volume of Shimi no techō (The Bookworm Handbook). He is a devoted husband and cat lover. His favorite creators are Stephen King, Haruki Murakami, M. Night Shyamalan, and Hirohiko Araki. He felt sick after eating an ice cream the day before writing this profile.