  Understanding infrared (IR) luminosity is fundamental to understanding the
cosmic star formation history and AGN evolution. Japanese infrared satellite,
AKARI, provided unique data sets to probe this both at low and high redshift;
the AKARI all sky survey in 6 bands (9-160 $\mu$m), and the AKARI NEP survey in
9 bands (2-24$\mu$m). The AKARI performed all sky survey in 6 IR bands (9, 18,
65, 90, 140, and 160 $\mu$m) with 3-10 times better sensitivity than IRAS,
covering the crucial far-IR wavelengths across the peak of the dust emission.
Combined with a better spatial resolution, we measure the total infrared
luminosity ($L_{TIR}$) of individual galaxies, and thus, the total infrared
luminosity density of the local Universe much more precisely than previous
work. In the AKARI NEP wide field, AKARI has obtained deep images in the
mid-infrared (IR), covering 5.4 deg$^2$. However, our previous work was limited
to the central area of 0.25 deg$^2$ due to the lack of deep optical coverage.
To rectify the situation, we used the newly advent Subaru telescope's Hyper
Suprime-Cam to obtain deep optical images over the entire 5.4 deg$^2$ of the
AKARI NEP wide field.
  With this deep and wide optical data, we, for the first time, can use the
entire AKARI NEP wide data to construct restframe 8$\mu$m, 12$\mu$m, and total
infrared (TIR) luminosity functions (LFs) at 0.15$<z<$2.2. A continuous 9-band
filter coverage in the mid-IR wavelength (2.4, 3.2, 4.1, 7, 9, 11, 15, 18, and
24$\mu$m) by the AKARI satellite allowed us to estimate restframe 8$\mu$m and
12$\mu$m luminosities without using a large extrapolation based on a SED fit,
which was the largest uncertainty in previous work. By combining these two
results, we reveal dust-hidden cosmic star formation history and AGN evolution
from z=0 to z=2.2, all probed by the AKARI satellite.
