Knite0 said: And we can assume Keine took it too to be with her (which also negated her becoming a were-hakutaku I assume)
Didn't necessarily make Keine not a were-hakutaku. A similar image series from komaku_juushoku had an adult Mokou with baby Keine, and that baby Keine was most definitely a were-hakutaku. There was even a mini-arc of Mokou freaking out the first time she saw Keine transform.