Wow, thank you! Your review was very, very flattering! The mathematical conceptualizations where really fun to write, and it was a kick to write in the tone of something I usually use for essays for something that was on a subject decidedly unacademic.

You're really making me like Hakkai x Yaone :)

What a compliment! (I'm assuming you prefere Kou x Yaone, right?) I'm really, really glad that you liked this.