Board Thread:General Discussion/@comment-6192846-20151129184922/@comment-6192846-20151208164819

The original PVs for both songs don't use any names, though they credit the Vocaloids involved.

Anyhow, the SCP booklet explicitly uses the names "Rin", "Mei", "Miku", and "Kai" for the Miroku families. Regardless of whether she's got other names in the story, one of her primary aliases in-universe is Rin.