Almost 30 years ago, a custodian in Japan sat in front of a large A1 size sheet of white paper, whipped out a pen and started drawing the beginnings of diabolically complex maze, each twist and turn springing spontaneously from his brain onto the paper without aid of a computer.

The hobby would consume him as he drew in his spare time until its completion nearly 7 years later when the final labyrinth was rolled up and almost forgotten. Twitter user @Kya7y was recently going through some of her father’s old things (he’s still a custodian at a public university) when she happened upon the maze and snapped a few photos to share on Twitter.

She was quickly inundated by requests from friends and eventually strangers who had endless questions, the most obvious being: are you making prints!? Well, prints now available over in the Spoon & Tamago shop.