WebOriental scops owl ( Otus sunia japonicus) Fish. Kuruma prawn ( Penaeus japonicus) Flower. Kakitsubata ( Iris laevigata) Tree. Hananoki ( Acer pycnanthum) Aichi Prefecture (愛知県, Aichi-ken, pronounced [aitɕi̥ ꜜkeɴ]) is a prefecture of Japan located in the Chūbu region of Honshū.