Tenchu

is a powerful technique created and solely used by Senkai, incorporating Senjutsu.

Usage
By exerting natural energy-imbued chakra around them, the user manifests awarrior, which dwarfs building and is invisible to the naked eye, only perceived by those able to harness natural energy. To the untrained eye, it seems as if the user is merely floating, allowing them to deal massive blows without the victims even seeing them. The unavoidable drawback is that the user must remain still in order to harness more natural energy into it so as to prolong its usage.

Usage
The technique costs a fairly large amount of chakra; approximately a quater of Senkai's chakra through a few minutes. As stated, the user must not move whilst the ethereal being itself moves freely, with the user within it. The technique will cause disorientation upon its release due to absorbing the natural energy the user harnessed for Sage Mode. However, this is easily removed by absorbing passively into the Tenchu.