Rigorous and Empirical Approaches to Correlated Single Particle Theories -- Circular Dichroism Spectroscopy with the SAC-CI Methodology: A ChiraSac Study -- Frontiers of Coupled Cluster Chiroptical Response Theory -- Response Theory and Molecular Properties -- Response Properties of Periodic Materials Subjected to External Electric and Magnetic  Fields -- Quantum Chemical Methods for Predicting and Interpreting Second-Order Nonlinear Optical Properties: from Small to Extended p-conjugated Molecules -- Embedding Methods in Quantum Chemistry -- Calculation of Vibrational Spectra of Large Molecules from their Fragments -- Describing Molecules in Motion by Quantum Many-Body Methods -- Relativistic Time-Dependent Density-Functional Theory for Molecular Properties -- Warming Up Density Functional Theory -- Toward a Quantum Chemical Description of Molecular Properties and Chemical Reactions at Extreme Condition of Pressure -- Transition States of Spin-Crossing Reactions from Organometallics to Biomolecular Excited  States -- Electron Communications and Chemical Bonds -- Molecular Dynamics Simulations of Vibrational Spectra of Hydrogen-Bonded Systems -- Nuclear Quantum Effect and H/D Isotope Effect on Hydrogen-Bonded Systems with Path Integral Simulation -- Vibrational Linear and Nonlinear Optical Properties: Theory, Methods and Application -- Ab Initio Molecular Dynamics Study on Photoisomerization Reactions: Applications to Azobenzene and Stilbene -- Density Functional Theoretical Studies on Chemical Enhancement of Surface-Enhanced Raman Spectroscopy in Electrochemical Interfaces -- Quantum Chemistry Studies of Overtones and Combinations.