>>280229838
Most vocaloid producers that use Len, including the ones that lewd him, are male. And traps are made for men.
>>280236084
I looked through the mangaka's entire twitter and didn't find this pic. The only pics they had showing hands were two with a baby cat, but were inconclusive. They did have short nails, though.
They also drew pic related and Kei's chinchin (repeatedly).