@xuna_xuna Like this image! Generally, if you write "かな", you would draw a curved line. But, in this image, the line is drawn angularly, looking like a square or a rectangular. "カク" comes from "四角（しかく）", meaning a square or a rectangular.
@xuna_xuna oh, please don't cry. OK, OK, no problem!:) " :) " ←This makes you think so! I see! haha.:) I like the nickname "cheetos boy" coz you call me in a friendly way! But, "cheetos guy" is also okay.:)