We conducted a field survey to collect leguminous genetic resources and investigate their distribution in Kagoshima and Kumamoto Prefectures, in the southern part of Japan, from October 16th to 20th in 2017. In total, 55 accessions were collected, including 32 wild soybean (Japanese name, Tsuru-mame) accessions, 15 wild adzuki bean (Japanese name, Yabutsuru-azuki) accessions, one cultivated adzuki bean (Japanese name, Azuki) accession, five wild tuber cowpea (Japanese name, Aka-sasage) accessions, and two cowpea (Japanese name, Sasage) accessions. We successfully identified the southernmost wild adzuki bean of Japan, the 'KK-10' accession, and collected its seeds in the Osumi Peninsula. All collected seeds are conserved at the National Agriculture and Food Research Organization (NARO) Genebank of Japan. We plan to multiply seeds of the collected accessions and to evaluate their growth traits at our experimental field in Tsukuba City in 2018. Multiplied seeds will become available upon request for research, breeding, and educational purposes.