X-ray - Infrared relation of AGNs and search for highly obscured
  accretion in the AKARI NEP Field
  The infrared Astronomical Satellite AKARI conducted deep ($\sim$ 0.4 deg$^2$)
and wide ($\sim 5.4$ deg$^2$) surveys around the North Ecliptic Pole (NEP) with
its InfraRed Camera (IRC) with nine filters continuously covering the 2-25
$\mu$m range. These photometric bands include three filters that fill the
`Spitzer gap' between the wavelength coverages of IRAC and MIPS. This unique
feature has enabled us to make sensitive mid-infrared detection of AGN
candidates at z$\sim$ 1-2, based on the Spectral Energy Distribution (SED)
fitting including hot dust emission in the AGN torus. This enables us to
compare X-rays and the AGN torus component of the infrared emission to help us
identify highly absorbed AGNs, including Compton-thick ones. We report our
results of the Chandra observation of the AKARI NEP Deep Field and discuss the
prospects for upcoming Spectrum-RG (eROSITA+ART-XC) on the AKARI Wide field.
