A key signature of this sofa is the ability to attach a side table and armrest as options. Insert the armrests and the table parts into the brass legs to affix them. The optional parts include a side table, an armrest, and a shelf that can be attached to the backside and used as a bookshelf or a display shelf. The product is finished into a compact size yet maintains a sense of volume. While achieving the comfort made possible by the sofa’s fundamental parts of seat and backrest, the product also pursues a simple design that does not strain the shoulders and elbows, taking on lightness and a casual feeling.