1. Introduction  
2. $18\,\mu\mathrm{m}$ Excess Search with AKARI/IRC All-Sky Survey  
2.1. Input Catalogue: Tycho-2 Spectral Type Catalogue  
2.2. AKARI/IRC Point Source Catalogue  
2.3. Cross-correlation  
2.4. $18\,\mu\mathrm{m}$ Excess Candidate Selection  
2.5. Known YSOs and Late-type Stars  
2.6. Photospheric SED Fitting and Extinction Determination  
2.7. Selected Debris Disk Candidates  
3. Additional Photometric Measurements of Debris Disk Candidates  
3.2. IRAS, MSX, Spitzer, and WISE Photometry  
4. Results and Discussion  
4.1. Debris Disk Frequency  
4.2.1. MIR Colour, Inner Temperature, and Inner Radius  
4.2.2. Lack of Cooler Material in Outer Region  
4.2.3. Fractional Luminosity of Inner Disk  
4.2.4. Difference between A and FGK Stars  
4.3. Individual Star  
5. Summary