User blog comment:Damesukekun/Song Translating and Mistranslating/@comment-31844645-20180204010901/@comment-25758860-20180204051219

The original song was composed in 2011, which is the upload that wingarea translated in 2011. But the link you sent is using a fanmade PV (2015) and reprinted in 2017. It just uses a translation from 2011.