Kidera, also known as the Koyama abandoned temple, is a late 7th century Buddhist temple constructed in the Asu-ka region of Yamato, As this temple is located in the Kitera district of Asuka, it has been assumed that it was built by the Ki clan, The temple is mentioned in the Shoku-Nihongi in an entry that describes the release of slaves from Kidera, From this entry it is assumed that the temple was built at Asuka in the emperor Tenchi era and the zigzag-edged multi-petal lotus leaf round eave tiles at this temple are known as the "Kidera type", <BR>This Kidera type eave tile was used for the temple of one clan but was also noticeable on the ancient mountain tem-ples of the Kinai and was furthermore widely used for many provincial temples, It has been suggested that the wide distribution of these tiles makes it difficult to regard the Kidera as the temple of one clan and that it may have been an official temple, the Takechi Odera, Several excavations at Kidera, however, have shown that it was built following the grid of the Fujiwara Capital, From the fact that its construction does not date back before the establishment of the Fujiwara grid in Tenmu 5 (AD676), the role of the Ki clan in erecting the Kidera temple has to be reconsidered, <BR>An old type of the Kidera eave tiles used for Kidera temple was used during the construction of the Oyake aban-doned temple in Ymashiro, As the mold used for casting the roof tiles of Oyake temple was later taken to the Fujiwara Capital tile kiln, Oyake is seen as a Fujiwara clan temple, Moreover, the Kumedera temple in Asuka, which has tiles from the same mold as those found at the Kofukuji temple built by the Fujiwara clan in the Heijo Capital, was used to supply eave tiles for the Fujiwara Palace, showing that these two Fujiwara temples were closely connected with the production of roof tiles for the Fujiwara Palace, During the construction of Kidera, which was closely connected with the Oyake temple, a round eave tile mold was brought from the government tile kiln at Fujiwara Palace and this temple also has to be reconsidered as having been erected by the Fujiwara, Based on Toshio Kishi's reconstruction of the Fujiwara Capital, Kidera was built in grid 8, column 2 (8 jo, 2 bo) of the Left Capital, and was thus almost in the mirror position of Moto-Yakushiji temple at 8 jo, 3 bo in the Right Capital, Moto-Yakushiji was a temple that the emperor Tenmu pledged to erect in 680(Tenmu 9 / 11 / 12) for the recovery of empress Uno when she became seriously ill, Fourteen days later the emperor himself became ill and it can be assumed that in place of the princess the Fujiwara clan pledged a temple construction, For this reason it can be imagined that in the Fujiwara Capital, the Kidera (Koya-ma abandoned temple) was built in the eastern Left Capital for emperor Tenmu and the Moto-Yakushiji temple was erected in the western Right Capital, <BR>The zigzag-edged eight-petal lotus leaf round eaves tiles used during the construction of Kidera used a design based on the prototype of eave tiles at the Kuzugami abandoned temple in Hirakata City, This is thought to be the clan tem-ple of Kawachi Umakai who were connected with the education of the empress Uno, thus suggesting the heavy invol-vement of empress Uno at Kidera,