Triplets is when the cell split into three. But what they mean is there are two identical twin and the other twin is not identical. Means that one twin come from different egg in the womb
U know triplets is when 'the egg' been divided into three..but in this case therere like two egg and two sperm...one of the egg divide into two but the other one is not...i think thats y they didnt call it triplet...
wow good chapter. i really feel like the manga as developed greatly over time