Translation by pocketmofo:
Here's a quick translation of the spoiler. The spoiler author can't remember Kensei's name so some of the explanation the author gives of Kensei's appearance (short-haired, tough guy fighter type) has been left out since I would imagine everyone knows who Kensei is.
*The time is 9 years after the previous chapter
*Citizens in Rukongai are disappearing/vaporizing.
*Then, you can hear conversations like “Normal souls won’t work.”
*The scene then changes to Shinigami division quarters.
*Mayuri appears and he’s working with Urahara and Hiyori.
*Shinji is there and the four of them talk. The scene changes again.
*Kensei and Mashio are working together.
*A hollow appeared in town*** so Kensei, Mashiro, and other Shinigami go to kill it.
***The spoiler doesn't indicate if it's the real world or still in Rukongai somewhere (I would assume Rukongai)
*Kensei uses his shikai and kills the hollow. Mashiro has disappeared.
*Mashiro then appears out from the grass and we see that there are 10 Shinigami uniforms that have been left in that area…(as in the uniforms had been taken off and abandoned)
*Sorry it’s so difficult follow.
*I really don’t understand this week’s chapter that well.
*Once I get JUMP I will post a better summary.
*By the way, it seems that Mashiro is the vice-captain of either the 6th or the 9th division and Kensei is captain of the 6th or the 9th division.
*Oh, and the hollow was attacking someone named “Hisagi Shuuhei”.
*Kensei bullies the crying Shuuhei telling him to smile.