Taigokomaru, Shiori's Mother and others in “Unfinished Business”

You want me to honer his wishes? How ludicrous! Sukiyomaru was indeed my son but he was fool! Falling in love with a mortal only hastened his demise!

What do you mean by that?

Just as you stated: He said he would protect this village. He said that unless we abide by his wishes, he would abandon his duty as Guardian of the Barrier, and would leave the tribe! Even his heart had been stolen by the mortal. That's why...

Why what?

Inuyasha

That's why what?" Don't tell you- You didn't kill your own flesh and blood!?

I did. I took great pleasure in hastening his trip to the netherworld. I had Shiori, so the boy was of no use to me.