City of Sand

Chapter 1. The Between World
In Huceo Mundo, a man by the name of Mushoku Kaigan had finished making his city of sand. This city from the sands of Huceo Mundo or the Hollow's World and his own Sekkiseki sand will be the arena for the battle. The city was similar replica to Los Noches in city, minus the dome ceiling. Due, to him making the city out of Sekkseki as well as the sand of Hueco Mundo, the city was protected with a weaker version of Soul Society's Shakonmaku (遮魂膜, Soul-Warding Membrane). A membrane of the Sekkiseki's unique reiryoku that breaks down all other reiryoku. Only Mushoku is unaffected, for possessing a new spiritual property that negates the Sekkseki's power.

Mushoku sent a written request to Furuidensho Kakkotaru Shin'nen, the latest desired research subject. He made an official request to the Gotei 13's current General. The letter said, " Furuidensho Kakkotaru Shin'nen I Kaigan Mushoku, ask you to Huceo Mundo. You may invite any number of Shinigami for protect, however I will state that no harm or hollow attacks will happen. I will open a Garganta, outside of the White Road Gate (白道門, Hakutōmon). I ask that appear there at noon, three days from the day you get this letter. Thank you."

Mushoku Kaigan.

The third day comes.