I was going through my old files and discovered a picture I took of my Nintendo 3DS as a young girl. Isn't she lovely?

This picture was taken about 3 months before I set her up on the closet shelf and forgot about her for 13 years ._.
Anyway, please direct your attention to the touchscreen. On the extreme left side, mostly obscured by the left arrow icon, is a logo for a piece of software i don't recognise. I know that I used a transfer utility to take most of my DSiWare over to my 3DS from my DSi, so it's probable that this icon is something from there. However, I don't have the foggiest idea what this is for. It looks vaguely like Kuribo's Shoe from Super Mario Bros. 3 but for a hole in the front.

Have you ever seen this logo? If so, what is it for? I've run myself ragged trying to remember what DSiWare I had, but I know I'm forgetting things, because I was quite keen on DSiWare back in the day, so I know I had a lot of it. Including that proto-Super Mario Run title, Super Mario Clock. But this isn't the icon for that. If you fancy a challenge, or you know what it is, please let me know! Also, bear in mind that both the DSi and 3DS are North American, therefore the software has to have been released in that region.
Incidentally, this was the same photoshoot where I took the photo that I derived the coverart to Okay Millennial from. The cover doesn't exist anymore, but the EP lives on as part of Mint in Box.
