  Studies of micro time projection chambers using negative ion gas (NI$\mu$TPC)
are conducted especially for direction-sensitive dark matter searches. A
NI$\mu$TPC enables to measure the absolute position in the drift direction for
self-triggering TPCs. This study provides a development of a NI$\mu$TPC using a
micro pixel chamber ($\mu$-PIC) with dedicated readout electronics, and an
evaluation of the capability of three-dimensional absolute position
reconstruction of nuclear recoil using a neutron source. The absolute track
position was reconstructed throughout the drift volume with an efficiency of
70$\pm$5%. This work marks an important step for the NI$\mu$TPCs towards the
practical use for directional dark matter searches.
