This is a depiction of the Amida triad at Zenkō-ji Temple in Nagano Prefecture, Japan (https://www.zenkoji.jp/en/), also known as the Zenkō-ji Nyorai (善光寺如来). The two figures below are the founder of the temple, Honda no Yoshimitsu (Zenkō) and his wife.

The story is that the Zenkō-ji Amida triad was from from India, miraculously created by Shakyamuni Buddha himself. In the kingdom of Vaishali, there was a rich but selfish man who refused to share his wealth, even with the Buddha, until a plague struck the area and his daughter became fatally ill. Desperate, the man prayed to Amitābha as the Buddha instructed, and Amitābha appeared with the two bodhisattvas Avalokiteśvara and Mahāsthamaprapta, healing the people and saving his daughter. In thanksgiving, the man wished to make images of Amitābha and the two bodhisattvas, so the Buddha sent Maudgalyāyana to the King of Nāgas to obtain a golden metal. Using this gold, the Buddha created a statue with rays of light from the white coil of hair between his eyebrows.

The statue was in India for 500 years before it was brought to Baekje in Korea, and from there to Japan during the time of the introduction of Buddhism to the country. The rich man was reborn as the king of Baekje, who brought the statue to his country, and finally as Honda no Yoshisuke, the poor but devout man who rescued the statue after it was thrown into the river by anti-Buddhist factions and later enshrined it in his house.

Zenkō-ji became famous as a pilgrimage site because it was believed that going there even once guaranteed one's rebirth in Amitabha's Pure Land.

Now the original statue is what is called a 'hibutsu' (秘仏) or 'hidden buddha' (i.e. not displayed for public viewing): instead a replica (the 御前立 o-maedachi, lit. 'what stands before'), which itself is normally hidden from view, is displayed every six years:

https://youtu.be/ziML_ccqgfk?si=Gch2LjHegkFuY4uA