at this stage of the story shirukyi left quite a bit of traces..
- sole survivor of the Ouga Party , recorded in adventure guild ..
- yamazaki was killed after kidnapping a nun from orphanage , further investigation showed shirukyi visited orphanage ofthen
- sole survivor of the Devil Twin tower party , recorded in adventure guild ..
a cursory investigation by the reincarnators would show one person (shirukyi) as the possible suspect as she is at the scene of all 3 missing / dead reincarnators..
if they visit the orphanage or just watch it from afar they will see Lunatic inside talking with shirukyi..
also razvel the esper seem to have ability to contact other reincarnators via telephaty , if she contacted mil mil who is srill alive then shiruki will be exposed..
the teleport orb they used for meeting also can be traced back to twin devil tower and the reincarnators can visit it if they want to investigate sil sil mil mil