My research interest is in particle physics beyond the standard model. Supersymmetry that roughly doubles the particle content is by far the most promising extension of the standard model, which predicts physics up to a fundamental scale where all three interactions are unified into a single one. Dark matter should have a particle physics origin, and it can be interpreted in many models. Also the matter/anti-matter asymmetry in the universe can be interpreted through particle physics mechanisms such as electroweak baryogenesis and leptogenesis.