No, Yosumin DS is not an RPG, but rather a nice little puzzle game where one has to erase rectangular areas, but only those having the same color at each corner, so that set numbers of tiles from each color are erased.
Though this version remained in Japan, Windows and Xbox 360 versions were later released worldwide.
Debug Font#
Graphics for the ascii debug font, in four different colors even, each of which appear to be the CGA color format.