八太郎おしまこ保存会

八太郎地区で伝承される、おしまこ節によって踊られる盆踊りで、広場や境内などで円陣を作り、楽器を用いず、歌と地面を摺る足音を伴走にして踊ります。歌は七七七五調の詞型で、声を重ね合わせながら掛け合うなどの特徴があります。八戸地方のおしまこ節の古い歌唱形態を保持するだけでなく、楽器を用いない八戸地方の盆踊の古い形態を保持しています。
五穀豊穣を祈願するため、手は実り豊かな稲穂を表し、不作の稲を表す手のひらを返す所作は、飢饉を想起させるため忌避されています。
保存会では八太郎おしまこのほか、十六足とササナニャドヤラの普及活動をしており、現在では子どもから大人まで多くの町内住民などが親しんでいます。９月の小田八幡宮例大祭などでも披露しています。八戸市指定無形民俗文化財。

Hattaro Oshimako is a Bon dance performed to the Oshimako-bushi song, traditionally passed down in the Hattaro district. Participants form a circle in open spaces or shrine grounds and dance without musical instruments, using only the singing and the sounds of their feet scraping the ground as accompaniment. The song follows a 7-7-7-5 syllabic pattern and features a distinctive call-and-response style with overlapping voices. This dance not only preserves the old vocal style of the Oshimako-bushi from the Hachinohe region but also maintains the ancient form of Bon dances characteristic of the area, performed without musical instruments. 

To pray for a bountiful harvest, hand movements represent abundant rice ears, while turning the palms to symbolize poor crops is avoided because it recalls famine and is considered taboo. 

The preservation society actively promotes Hattaro Oshimako as well as other traditional dances like Jurokashi and Sasananyadoyara. Today, many local residents—from children to adults—enjoy participating. The dance is also performed at events such as the annual Oda Hachiman Shrine Festival in September. Hattaro Oshimako is designated as an Intangible Folk Cultural Asset by Hachinohe City.