Presence Sealing Seal

Korosen's prized invention. It renders the insides of the puppet completely invisible, even to puppet users. It does so by mimicking the effects of storage seals (which are extra-dimensional) to prevent anybody from looking into the puppet (since nobody can look into a storage seal), and at the same time prevents any enemy chakra from penetrating into it, unless they destroy the puppet's body and thus disrupt the seal. This makes the user immune to Genjutsu.

The effects of storage seals in this Presence Sealing Seal has also created additional space in the puppet, and can support Korosen summoning up to 30 clones within it (with each clone having its own personal space to do its own thing). The total amount of clones it can actually support (assuming they all squeeze) is actually over a hundred. He normally summons clones outside after 30 clones because it would be more cost-effective to do so.

If the puppet body ends up destroyed, Korosen will be released from within the puppet, as the extra dimensional seal would collapse.