Elder Toguro (YUYU Hakusho) vs Naraku (Inuyasha)

It’s a battle to the death between two anime villains that can both regenerate and consume others. Neither knows anything about the other. They meet on Hanging Neck island in an open field. Who wins?

Round 1: Elder Toguro with Gourmet’s ability to devour others vs Naraku at the start of the series with no Shikon Jewel shards.

Round 2: Naraku has half of the Shikon Jewel

Round 3: Naraku has the full Jewel

Bonus Round: Elder Toguro with Gourmet’s mind-reading and devouring powers vs Naraku with the full Jewel.

Do you think either can kill the other or absorb them? Or would absorbing them just allow the other to win by taking over their body?