Que tal mis Shikon Jewels
Naruko is the in villain in Inuyasha. Basically, if he wasn't for him there would be nothing for anyone to do low key....
Yass he's the bad guy bit everyone has a story. He was once human but gave his soul to demons in order to live forever and seek revenge against Inuyasha. He feel in love with Kikyo. She cared for him when he was human and known as Onigumo.
Shikon Jewel Squad
He was pissed that Kikyo's heart belonged to Inuyasha. So he killed Kikyo in the form of Inuyasha. There is more but if you want the full story click here.