Bleach: Thousand-Year Blood War had many mysteries but none confused fans more than Yachiru vanishing into thin air after Kenpachi's battle with Gremmy.

Demon Slayer doesn't do much of that, but Bleach does, and with stellar results. Villains like Gremmy Thoumeaux, Yhwach, Sosuke Aizen, and Baraggan Luisenbairn have seemingly foolproof powers ...