Make the pork: Mix orange juice, apple butter, five spice, soy sauce and sugar. Place tenderloin and sauce mixture into large slow cooker. Cook on high for 3 1/2 hours. (or low for 5 1/2 hours).
Mix water and cornstarch. Add mixture to slow cooker. Heat 10 minutes or until thickened.
Make the slaw: Mix all ingredients except sesame seeds. Refrigerate overnight. Add sesame seeds before serving.
Serve pulled pork on soft sandwich rolls, top with slaw.