Sunlight resistance

The bizarre dialogue concluded and D left the scene of the tragedy. The
winter sun was still high. D chose the shade as he walked. That there wasn’t
even a tinge of weariness marring his beauty was truly astounding.

Irrespective of the weather, during the daylight hours those of vampire
lineage craved rest at a basic physiological level. If it were merely a matter
of remaining conscious, they could do so for up to eight hours if they
confined themselves to a place where the sun virtually never shone. But if
they engaged in any walking or standing around in sunlight, after four hours
they’d lapse into a near-death state. Super Grade A Vampire Hunters could
barely manage five to six hours of full activity. Their exhaustion was
entirely different from that felt by a human working all night long, and it
was solely because of this major weakness in the Hunters that the human
wish to have all the Nobility exterminated remained unfulfilled.

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