Instinct Released (Ichigo X Hichigo)
When Muramasa got Ichigo Kurosaki to come to the Soul Society, instead of getting Ichigo's Quincy Powers (fake Zangestu) he got Shiro (Hitichgo or Hollow Ichigo) instead.
After defeating Murasamasa and his wielder, Ichigo went back home thinking nothing but what a teenager human should focus on, but to his surprise, things were far from average when he entered his classroom and saw a surprise awaiting at his desk.
What Ichigo did not realize was that nothing was going to be the way it was ever again.
P.S. This is a ship. If you don't like the ship please reframe from reading. Also I am bored, doesn't mean I won't make it good, but anything can happen. Please note that if you are innocent. Your welcome for the warning.
(I do not own any of these characters from Bleach)