Buddhist temples in Japan, like temples, shrines, and churches all over the world, are often repositories of a lot of art. Some temples have a little in the grounds, ornamenting the architecture, and inside on the aktars, etc. Some however are rich in artworks amd can be like visiting a museum or gallery.
This photo of a young priest may be Kobo Daishi as a young man. Horakuji is a Shingon temple and their website says they have a modern statues of him. It may be Jiun, a famous 18th century monk who began his studies as an acolyte here when he was 13 and went on to become famous as both a sanskrit scholar and as a religious leader who emphasized a return to an earlier, less "degenerated" form of Buddhism.
This last one is obviously an onigawara, a demon rooftile to ward off evil. Quite a similarity to the "demon queller".




