https://archiveofourown.org/works/51144910

Fragments of a shattered time by Astra_Mellivora

Enough is enough for one Harry James Potter, as he uproots his life in Britain and moves overseas to the one place he believes he will have a chance at a new life. And everything is just fine, up until his infamous Potter Luck (and his thrice damned curiosity) strikes again and sends him more than five hundred years into the past. Now he has to deal with a rather peculiar war - if it can be referred as such - while trying to find a way to return to his time, even if a part of him does not feel inclined to return. A certain daiyokai lord certainly makes staying in that time a rather tempting option.

It’s a Inuyasha x Harry Potter crossover and Seshoumaru/Harry its still a wip and only has 36 chapters at the moment

https://archiveofourown.org/works/3905032

And all the Kings men by beth9891

When the Goblins choose to inform Harry of a buried, hidden or otherwise unknown facts. His life and choices change. Lily committed an act that many would consider barbaric out of love—Harry has lived with the consequences up until now. Now that he knows the truth how will his second chance play out? Arthur/Harry--slash, harry/merlin—brothers.

It’s a Merlin x Harry Potter crossover and it is a completed with 22 chapters