Light, especially solar light, attracts much attention as a clean energy source. In the field of organic synthesis, light provides a reaction pathway different from that of a thermal reaction, and it offers a novel synthetic method to transform organic molecules. Focusing on the reactivity of radical intermediates generated by photoreaction, I am working on the use of common compounds such as carbon dioxide, water, sugars, and amino acids. I believe this approach would contribute to a sustainable society and the creation of new functional molecules. I also aim to discover unknown phenomena and properties of organic molecules through the development of reactions and contribute to the further development of chemistry.