Umm... well... NO! A human can not become a Hanyou, unless it is born as one with a human as a parent and a demon as a parent, but then that is what we call a hanyou. This is just a peice of Fanart someone made up just to be cute, and isn't to be taken seriously.
Actualy I believe that the three little ones are actually Sango and Miroku's kids, because in the end of the story they do have three kids together; inuyasha and Kagome just appear to be babysitting them. It seems someone went and super imposed Inyuasha's hair style and ears on them just to make them all look like hanyous, and the ears on Kagome's head are the same, just an added on.
nope. sorry but no it's not possible unless tu were born like that but if there was a girl like that on the mostrar i would say for her to replace kagome ^.^
