Super Mario Sweater?

Lately I’ve been researching all the Japan-exclusive Famicom games. I just came across a Mario game I’ve never heard of called I am a Teacher: Super Mario Sweater. It’s a “game” on the Famicom Disk System where you design sweaters with Mario characters. You could edit the measurements of the sweater to ensure the perfect fit, then send your disk to a company and they would make the sweater you designed! :O