Re: Kubo pulled the whole broken bankai thing out of his ass
Senkei and shukei are the petals..They just condense and take another form.
Originally Posted by kotoamatsukami
Senkei (殲景, Slaughterscape; Viz: "Annihilate"): The true form of Senbonzakura. This unites the scattered petals into complete glowing swords, numbering in the thousands, that form four rows.
Shūkei: Hakuteiken (終景: 白帝剣, "Endscape: White Emperor Sword"; Viz: "Last Sight: White Emperor Sword"): This condenses each and every single one of his blades into a single, potent sword, drastically increasing its cutting power.