A new Adzuki bean cultivar, ‘Hongmiin’, was developed from the cross between K204656 (Toyomidainagon) and SA9905 in 2008. Hongmiin showed prominent agronomical characteristics, such as high grain quality, lodging resistance, and high yield in the regional adaptation yield trials (RYT) conducted for four years from 2017 to 2020. ‘Hongmiin’ is an early maturing variety, having a bright red seed coat, and the sediment ratio of this red bean was high because of the thin seed coat. The mean plant height of ‘Hongmiin’ was 58 cm, and its yield components were 7.4 pods per plant and a 100-seed-weight of 20.5 g of in the regional yield trials (RYT). This indicates that the Hongmiin has appropriate trait values for red bean production and processing. In the regional yield trial for the four years, the average yield potential of ‘Hongmine’ was 2.09 MT/ha, which is 8% higher than that of ‘Arari’ (Registration No. 9324).