Glad you enjoyed it :3 And that's awesome that you liked the contrasting mage and princess route Kuros :D I really wanted there to be at least 1 softer, much calmer version of Kuro in there while still making sure he was a yandere, haha. I was worried that the whole princess route might come off as boring compared to the other routes though >.< so that's great you still had fun with it!
The student route is the first route I ever wrote for the game, which I guess is why it came out so much shorter than the others + is probably the worst written of them all >.< It's something I hope to improve on if/when I ever get around to remaking the game with new art and extra content :3 I'm glad you still liked that route though. Lana is kinda the friend I never had but wished I did while at school, haha. It certainly would've made life much easier to have someone like that around :3
Expanding on original MC's story is also something I'd like to do in the remake, perhaps through epilogues or flashbacks of some sort as well :3
I guess I should probably put a spoilers thing here to answer your last question x3
Spoilers
The character who calls out for Anathema is my 4th wall-breaking character who doesn't yet have an official name, but has been nicknamed Archie (short for Architect). So when the character is speaking to Anathema, rather than speaking to a character within the game, they are speaking to you, the player. You are Archie's 'Anathema' :3 The character also features briefly in one of my other games (Apartment No.9 GxB/otome version), and I hope to continue trickling bits of him into my projects as time goes on ^-^
Thanks so much for taking the time to play through the game and leave such a lovely comment :3