The best replacement for naraku is inuyasha.

The best alternatives to naraku are rated as following:
★★★★★  inuyasha
★★★★★  sesshomaru
★★★  sesshoumaru
★  sesshomaru and inuyasha
  aku

Your alternative for naraku is not listed? Suggest!
Speaking about naraku, one probably shouldn't forget about kikyo.

Other search terms related to naraku and their ratings are:
★★★★★ kikyo
You have in mind a companion for naraku and it is not yet here? Propose!



Google Trends

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naraku
inuyasha
sesshomaru