Reopening of the Substitute Business! The Terrifying Transfer Student

Ichigo returns to the real world and is back in school. He meets up with his high buddies. His shinigami badge goes off and he runs out to slay a Hollow, along with Inoue and Chad. They talk about Ishida's lost powers and if he can get it back. As they run off a mysterious stranger appearances above Ichigo.Kon starts ranting how he wants out of his plushie form, and the badge goes off so Kon gets Ichigo's body. Meanwhile Ichigo slays the Hollow and meets Hirako Shinji a Visored. They talk about a hollow mask and a zanpakotou.Meanwhile, elsewhere in the city, Kon is attacked by the Grand Fisher, who's appearance has changed. As Ishida is attacked by Menos type hollow and trying to battle it, when some one helps Ishida. Who is it and why is he helping Ishida?