This early image of a Buddha (Skt. Tathāgata; J. Nyorai) is distinguished by the U-shape of the robe at the chest, the flat depiction of the folds in the draping fabric, and the hems hanging down near the feet that spread out from side to side. The modeling of the Buddha’s attire and his expression with its hint of a welcoming smile are stylistic features originating in the Northern and Southern dynasties of China during the sixth century.
 
IWAI TomojiEnglish by Mary Lewine 
Buddhist Art Paradise: Jewels of the Nara National Museum. Nara National Museum, 2021.7, p.349, no.41. 

This buddha wears a robe that is draped in a U-shape over his chest and flares out to the sides like wings at his feet. The way the drape of the robe is represented and the thick-lipped open smile on the face are thought to have their source in the styles of the Northern and Southern dynasties from mid-sixth-century China.  
Audio guide 

The robe is flared out at the bottom like wings. This image was thought to have modeled after the very similar figure of the Nyorai probably came from China or Korean Peninsula; that was recently found from the inner chamber of the Nyoirin Kannon (Skt. Cintāmaṇicakra) as the principal image in Ishiyama-dera Temple, Shiga Prefecture.
 
Yasuo Inamoto 
Masterworks from the Nara Buddhist Sculpture Hall at the Nara National Museum. Nara National Museum, 2010, p.138, no.157.