Tenkū no Yabusuma

is a sub-technique of the Sacred Arrow ability, and the signature attack of Moroha.

She shoots a sacred arrow in the air, which then creates a barrage of sealing arrows that rain downward on her enemy, rendering them immobile.

History
Moroha first used it to pin down Mistress Three-Eyes from attacking her.

According to Kirinmaru, the red Rainbow Pearl was merely limiting its true potential rather than strengthening it further. It was then seen as several arrows falling down above him as spiritual power covered them completely. Unfortunately, what damage they were truly capable of inflicting was easily blocked by the Beast King's purple demonic energy shield.

Trivia

 * This advanced sealing technique was never utilized by Kikyō, so how this was developed or learned is unknown. It was likely invented by Moroha herself.