This statue was originally enshrined at Kōfuku-ji Temple as part of a set of the Four Guardian Kings, or Shitennō, along with Jikokuten (now at the Miho Museum, Shiga), Kōmokuten (at Kōfuku-ji Temple, Nara), and Tamonten (at the Nara National Museum). His solid physique is powerful, and he seems to roar as he lifts his weapon aloft. 
Audio guide 

This statue was originally enshrined at Kōfukuji Temple in Nara as part of a set of the Four Guardian Kings (Shitennō) along with the Jikokuten (Skt. Dhṛtarāṣṭra) now at the MIHO Museum in Shiga, the Kōmokuten (Skt. Virūpākṣa) now at Kōfukuji Temple, and the Tamonten (Skt. Vaiśravaṇa) now at the Nara National Museum. His solid physique is powerful, and he seems to roar as if he lifts his weapon aloft.
 
YAMAGUCHI RyusukeEnglish by Mary Lewine 
Buddhist Art Paradise: Jewels of the Nara National Museum. Nara National Museum, 2021.7, p.333, no.201. 

The statue was dressed in armor, raised the right hand to get the weapon (geki) upright. The stoutly built body and furious face with opened mouth give a tremendous impact. It came from Kōfukuji Temple and originally constituted a set of Four Guardian Kings with Kōmokuten (Skt. Virūpāṣa) and Tamonten (Skt. Vaiśravaṇa).
 
Yasuo Inamoto 
Masterworks from the Nara Buddhist Sculpture Hall at the Nara National Museum. Nara National Museum, 2010, p.140, no.140.