research institute of electrical communication, tohoku university katahira campus, 2-1-1 katahira, aoba-ku, sendai, miyagi, japan (on the premises of katahira complex, tohoku university)
onagawa-machi, oshika-gun, miyagi prefecture (in onagawa-machi sogo undo park, baseball field for town residents)
minamisanriku-cho, motoyoshi-gun, miyagi prefecture, japan