Which variation of Ikebana expresses simplicity, naturalism, and informality?

The variation of Ikebana that expresses simplicity, naturalism, and informality is Nageire. This style is characterized by its free-form composition, where the arrangement is typically placed in a tall, slender vase. Nageire emphasizes the natural beauty of the materials used, inviting a sense of organic arrangement that reflects the natural world. The placement of flowers and branches in Nageire is often more spontaneous and less rigid, aligning well with the principles of simplicity and informality in Ikebana.

While other styles such as Moribana and Chabana have their own specific characteristics, they tend to incorporate more structural elements or formal arrangements, which can detract from the casual, naturalistic feel that Nageire embodies. Moribana often features a more compact and structured arrangement that may not convey the same level of informality. Chabana, although it shares a connection to the tea ceremony and promotes simplicity, can still involve a more deliberate composition compared to the spontaneous nature of Nageire. Thus, Nageire is the style that best represents the ideal of simplicity, naturalism, and informality within the context of Ikebana.