"青の時代" (Aoi no Jidai), or "Blue Period," refers to a significant phase in the artistic career of the Spanish painter Pablo Picasso. This period, which lasted from 1901 to 1904, is characterized by the use of cool blue tones and somber themes, reflecting Picasso's emotional struggles and the hardships faced by marginalized individuals. During the Blue Period, Picasso created notable works such as The Old Guitarist and La Vie. These paintings often depict themes of poverty, isolation, and despair, showcasing the artist's deep empathy for the human condition. This era laid the groundwork for his later explorations in art.