AERIE is a sofa series that can be used in various ways, from a private space using a single-person module to a public space where several people can gather. It fits any type of space, from a classic space to a free and comfortable casual space, depending on the composition. It can provide a private meeting space closed off from the surroundings and a communication space out in the open—all based on the height of the backrest. A creative layout suitable for each space can be arranged depending on the combination of components.