Severing Moon Crescent

Severing Moon Crescent is the first ability of the Shio Clan sword Shijima.

When the user utters the phrase Shatter (打ち砕く, Uchikudaku), the blade of the sword will shatter into thin air, leaving only the handle. After a half-second or so, a new blade forms out of white light, shaped using Yin Release chakra. As such, the blade is insubstantial, and affects only chakra. If the wielder can pierce his opponent with the Severing Moon Crescent active, then it will attack their chakra network, fully or partially cutting off their chakra flow and ability to use jutsu.

With the new blade being made out of light, it is extremely difficult to see in bright conditions and can act as a beacon in dark conditions, or a light.