A prototype of Kero Kero Keroppi no Mahō no Kuni Densetsu has found. I just find this while looking SNES Central's twitter posts. I was thinking that the Famicom prototype cartridge one is Kero Kero Keroppi no Mahō no Kuni Densetsu and it turned out it was right one. https://twitter.com/a_a_bm/status/936940235606204416
Doesn't seem like he has any intention of dumping (or even showing?) it... The other image is a flyer for an unrelated event. Shame, a lot of those Character Soft games are pretty good.
