First it appear in the moment Laura beat the crap out Cecilia and Rin, Ichika lost control, and continuously mutate as he was captured by AIC. Laura released him when his propulsion system explode. (This Laura is less sadistic but just as smug, thus Rin and Cecilia weren't injured much in this one)
As battletech player put it: Not enuff Heatsink
Hakurei sounds more exotic.