The extragalactic background suggests half the energy generated by stars was reprocessed into the infrared (IR) by dust. At z1.3, 90% of star formation is obscured by dust. To fully understand the cosmic star formation history, it is critical to investigate infrared emission. AKARI has made deep mid-IR observation using its continuous 9-band filters in the NEP field (5.4 deg2), using 10% of the entire pointed observations available throughout its lifetime. However, there remain 11,000 AKARI infrared sources undetected with the previous CFHT/Megacam imaging (r ~25.9ABmag). Redshift and IR luminosity of these sources are unknown. These sources may contribute signicantly to the cosmic star-formation rate density (CSFRD). For example, if they all lie at 1< z <2, the CSFRD will be twice as high at the epoch. We are carrying out deep imaging of the NEP eld in 5 broad bands (g; r; i; z; and y) using Hyper Suprime-Camera (HSC), which has 1.5 deg field of view in diameter on Subaru 8m telescope. This will provide photometric redshift information, and thereby IR luminosity for the previously-undetected 11,000 faint AKARI IR sources. Combined with AKARI's mid-IR AGN/SF diagnosis, and accurate mid- IR luminosity measurement, this will allow a complete census of cosmic star-formation/AGN accretion history obscured by dust.

ABSTRACT
1. UNDETECTED AKARI SOURCES
2. UNIQUENESS OF AKARI MID-IR DATA
3. SUBARU HYPER SUPRIME-CAM SURVEY
4. LEGACY VALUE OF THE HSC DATA:
5. 2014 HSC OBSERVING RUN
6. DATA REDUCTION
7. SUMMARY
REFERENCES

• AKARI All Sky Survey Team(Institute of Space and Astronautical Science, JAXA)
• AKARI NEP Survey team(Institute of Space and Astronautical Science, JAXA)
• Yi-Han Wu(Institute of Astronomy, National Tsing Hua University)
• Dani Chao(Institute of Astronomy, National Tsing Hua University)
• Ekaterina Koptelova(Institute of Astronomy, National Tsing Hua University)
• Seong Jin Kim(Department of Physics & Astronomy, FPRD, Seoul National University)
• Myung Im(Department of Physics & Astronomy, FPRD, Seoul National University)
• Lee HyungMoK(Department of Physics & Astronomy, FPRD, Seoul National University)
• Lucia Marchetti(Division of Particle and Astrophysical Science, Nagoya University)
• Katarzyna Malek(Division of Particle and Astrophysical Science, Nagoya University/National Centre for Nuclear Research)
• Chris Perason(Department of Physical Sciences, The Open University)
• Hanae Inami(Institute of Astronomy, National Tsing Hua University)
• Tsutomu Takeuchi(Division of Particle and Astrophysical Science, Nagoya University)
• Glenn White(Department of Physical Sciences, The Open University)
• Shinki Oyabu(Institute of Astronomy, National Tsing Hua University)
• Takamitsu Miyaji(Instituto de Astronoma, Universidad Nacional Autnoma de Mxico)
• Masamune Oguri(Department of Physics, University of Tokyo)
• Satoshi Miyazaki(National Astronomical Observatory of Japan)
• Masahiro Takada(Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo)
• Veronique Buat(Aix-Marseille Universite, CNRS, LAM (Laboratoire d'Astrophysique de Marseille))
• Denis Burgarella(Aix-Marseille Universite, CNRS, LAM (Laboratoire d'Astrophysique de Marseille))
• Steve Serjeant(Department of Physical Sciences, The Open University)
• Takehiko Wada(Institute of Space and Astronautical Science, JAXA)
• Takao Nakagawa(Institute of Space and Astronautical Science, JAXA)
• Hideo Matsuhara(Institute of Space and Astronautical Science, JAXA)
• Marios Karouzos(Department of Physics & Astronomy, FPRD, Seoul National University)
• Paul Price(Princeton University, Department of Astrophysical Sciences)
• Kazumi Murata(Institute of Space and Astronautical Science, JAXA)
• Youichi Ohayma(Institute of Astronomy and Astrophysics Academia Sinica)
• Matt Malkan(Department of Physics and Astronomy, UCLA)
• Toshinobu Takagi(Institute of Space and Astronautical Science, JAXA)
• Nagisa Oi(Institute of Space and Astronautical Science, JAXA)
• Yousuke Utsumi(Hiroshima University)
• Yoshiki Toba(Research Center for Space and Cosmic Evolution, Ehime University)
• Tomotsugu Goto(Institute of Astronomy, National Tsing Hua University)