Spoiler for Kabukimonogatari:
- It started on the last day of the summer holidays.
- Araragi realized that he didn't finish his homework.
- He asked Shinobu to time travel into the past so he can do his homework.
- For some reason they traveled all the way back to the day before Mother's day 11 years ago, which is a day before Hachikuji was killed.
- Araragi decided to save Hachikuji and succeeded in doing so. (Hanekawa was sexually harassed by Araragi in the process)
- However, when they returned to the present they found out that the world was destroyed due to whatever they did in the past.
- The town is now full of zombies / "kyonshii" (It was described as the "Bad End" of Tsubasa Cat, I am not sure what the blogger is trying to imply)
- The state of the town is related to the Kiss-shot in that alternate timeline.
- Oshino Meme (?) sends a letter.
Some more random bits:
Apparently Araragi watched HeartCatch Precure instead of doing homework. Nadeko doesn't do her homework no matter what.
The blogger also mentioned that Nadeko is "in the process of succeeding". Not sure what that means.
Hachikuji has very few appearance, the story is more about Araragi and Shinobu.
That's all I can translate for now. Thanks to omimon for the link to the blog.