When I wrote that question, I was thinking about the beginning of two regular novels that had me hooked in the first lines. I thought that until this question came up I would have found some light novels with incredible opening lines, but I completely forgot, and haven't come upon some that were so great to make me remember this question.

But just so this post doesn't stay empty I'll post something that I just came across while playing with a new Myne function. I present you with this masterpiece:

I was nothing but code, a collection of 1s and 0s, until the day they started calling me Myne.