Vicia amoena, grows wild, creeping in the grassland, the leaves
forming some tendrils at the terminal where it should be leaflets.
The plant in the pictures found themselves on a river-bank
where they can get full
sunlight almost all day. Not listed in Shimane RDB, but few
observers encounter, therefore, it's valuable. Additionally, a lot of soft hair is observed all around on
the stem and leaves.