Yumina's Device illustrated by Takuya Fujima in an INNOCENT artwork
|First app.||ViVid (ch.67) (mentioned)|
The name of the Device is yet to be mentioned in the series.
It is first mentioned in ViVid (ch.67), when Yumina is going to take it out from her school bag to exchange contacts with Vivio Takamachi and others. However it is yet to make its official appearance in ViVid.
- The presence of its standby form is unknown.
- In its active/usual form, it appears as a heart-shaped wristlet on Yumina's left wrist, as depicted in an INNOCENT artwork.