time travel fic

[merthurdrarry]

Hello all,

I am looking for a fic where post war Harry is bored and decided to do a spell to either go back in time or just not be bored. Anyways the result is he is sent back in time to when Tom Riddle was at Hogwarts building his army. Harry goes back as a pure blood boy who transfers to Hogwarts and has famous cousin who are friends with Tom. He catches tom's interest and I remember at the end the two battle grindwalds army in hogsmead.

Thanks!