The last two lines of the first stanza are begging for some rebalancing syllable-wise, but otherwise it's a good concept and good execution.
The last one seems off, dragging the other down. Reading it over I get:
With a reactor flowing right,
My mind begins to slowly fight.
In unraveling the world takes flight,
Up it is a flying kite.
Through the fusion of sanity,
The light of sight insanity.
I see my way, into night,
Not until another light.
Slightly better, although it could be improved on later.