'Omake' means 'extra' in Japanese, meaning the last chapter was an extra chapter irrelevant to the storyline.
I wanted to inform you, readers, a bit more about Harry's past life, especially the assassin part, as that got quite a few shocked comments. It was also past midnight, so my mind was muddled, and that chapter suddenly happened.
I hope you liked it and the confusion is solved. If there is anything else you do not understand, please leave your comment in this chapter and I will answer as soon as possible.
Have a spectacular day/night,