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Understanding infrared (IR) luminosity is fundamental to understanding thecosmic star formation history and AGN evolution, since their most intensestages are often obscured by dust. Japanese infrared satellite, AKARI, providedunique data sets to probe this both at low and high redshifts. The AKARIperformed all sky survey in 6 IR bands (9, 18, 65, 90, 140, and 160$\mu$m) with3-10 times better sensitivity than IRAS, covering the crucial far-IRwavelengths across the peak of the dust emission. Combined with a betterspatial resolution, AKARI can much more precisely measure the total infraredluminosity ($L_{TIR}$) of individual galaxies, and thus, the total infraredluminosity density of the local Universe. In the AKARI NEP deep field, weconstruct restframe 8$\mu$m, 12$\mu$m, and total infrared (TIR) luminosityfunctions (LFs) at 0.15$<z<$2.2 using 4128 infrared sources. A continuousfilter coverage in the mid-IR wavelength (2.4, 3.2, 4.1, 7, 9, 11, 15, 18, and24$\mu$m) by the AKARI satellite allows us to estimate restframe 8$\mu$m and12$\mu$m luminosities without using a large extrapolation based on a SED fit,which was the largest uncertainty in previous work. By combining these tworesults, we reveal dust-hidden cosmic star formation history and AGN evolutionfrom $z$=0 to $z$=2.2, all probed by the AKARI satellite.

Cosmic star formation history and AGN evolution near and far: AKARI reveals both