the eldest child "the girl with the black hair is kaname× yuuki daughter ... and the boy with the white hair is yuuki × zero child ... after kaname get in the ice there is an exta chapter showing how yuuki found out about her pregnancy from kaname with zero .. u can read the chapter on mangafox... but I dont know if zero is alive or died before yuuki
and thats why the kids say they have 2 fathers
I don't understand the end who the 2 children and who is the father where is yuki and zero ??