The Diary

Hermione finds a curious diary and the boy it's connected to lives in the past. Tom pulls his new 'friend' underwing and her endless potential quickly makes her his favorite soldier. Unfortunately, protecting her when he's 50 years behind her is tricky at best. No TTs, horcruxes, or prophecy. Slytherin!Hermione/Harry. Tomione. Some Anti-Ron&Dumblehate. T at first, M later on.