Calligraphy is part of Japanese culture, and popular for interior decorations as well. Japanese syllabary characters such as Kana, and Kanji, and ink-wash paintings are framed and decorated in the living room or at an entrance.
There are shops selling Japanese calligraphy work for their interior. Special orders are available and you can buy a welcome board, name art, a picture of a pet with his or her name in a frame, and etc. which are all designed to math the product’s image.
Some people gift it for their friend’s birthday or for housewarming. It makes a western room look modern and bring an atmosphere like housewarming, and so it’s recommended for Japanese modern lovers.