New Rainbow Dictionary

Japanese Yojijukugo Dictionary written by Gakken Dictionary Editorial department, published by Gakken Plus.

Japanese Idiom Dictionary written by Gakken Dictionary Editorial department, published by Gakken Plus.

Japanese Proverb Dictionary written by Gakushu Kenkyusha, published by Gakken Plus.

Japanese Dictionary written by Hideho Kindaichi, published by Gakken Plus.