"Oath Sign", along with her song "Crossing Field" (2012) and "Rising Hope" (2014) are her most commercially successful singles, all of which have been certified by the Recording Industry Association of Japan.
"Oath Sign", beserta dengan lagunya "Crossing Field" (2012) dan "Rising Hope" (2014) merupakan singel yang paling sukses secara komersial, ketiganya telah memperoleh sertifikat dari Asosiasi Industri Rekaaman Jepang.