II. Electricity
L always sat in a modified fetal position, knees drawn inwards, toes curled like loaded springs. It was true that it improved his mental prowess, but it also protected him from things about which he chose to remain ignorant.
Raito's touch was a rude awakening, shocking L's limbs into their full length, sending something paralyzing lapping at every nerve. L would stutter, gasp, whisper, or cry out for more or less- or for a halt altogether. Raito was heedless. He was an endless fuse box, powered by firing synapses and L's ragged breathing.
Afterwards, L would slowly, systematically re-curl his body; the whites of his eyes a little wider, fingertips blackened.