[astroH]

Unfortunately not. These stars have no elements heavier than hydrogen and helium so you wouldn't be able to create a rocky planet that's habitable. Furthermore their lifetimes are only 3 Myr which is much to short to form a rocky planet and also the explosion from SN if it happens or direct collapse of the star to a black hole would immediately destroy any life.

[xwdv]

Ah fuck, there goes that idea then I guess.

[zopa]

Set it in Universe N+1 of a multiverse and mix in a tiny dusting of metals and such from Universe N.

Or maybe it’s a synthetic population III star, made for unknown purposes by a now-vanished civilization. You’re allowed to make up whatever you need to get the story going.