By AICreativeMedia

JK Rowling has apologised for killing off Remus Lupin. Remus is a favourite of Harry Potter fans, in the final book.

Monday marks the anniversary of the fictional Battle of Hogwarts, the gruesome events described in Harry Potter and the Deathly Hallows that ended the Second Wizarding War. To mark the day, author J.K. Rowling has apologized for killing a fan favorite character in the Harry Potter series: Remus Lupin.

“Once again, it’s the anniversary of the Battle of Hogwarts so, as promised, I shall [apologize] for a death. This year: Remus Lupin,” Rowling wrote on Twitter. “In the interests of total honesty I’d also like to confess that I didn’t decide to kill Lupin until I wrote Order if the Phoenix.”

In the interests of total honesty I'd also like to confess that I didn't decide to kill Lupin until I wrote Order if the Phoenix.

— J.K. Rowling (@jk_rowling) May 2, 2016

“Arthur lived, so Lupin had to die. I'm sorry. I didn't enjoy doing it. The only time my editor ever saw me cry was over the fate of Teddy.