Per wiki policy, Spoilers Off applies here and all spoilers are unmarked. You Have Been Warned.
Oh boy, where to start?
- At first, Anna looks like a typical haughty antagonist. Once you start digging into her past, and woo boy, is it a bad time. Despite everything she does, Anna was always considered a weak mage by her family, and then they adopted a more talented mage into the family. Worst of all, the power Anna thought she had was a lie. Shingetsu bolstered Anna's power as a kid, meaning Anna never was talented in the first place. By the time this gets out, Anna doesn't even care about the Granbelm anymore; she just wants to hurt Shingetsu as much as she can, in a twisted attempt for validation.
- Before Anna's big fight with Shingetsu after stealing her family's Power Stone, her little sister finds her and begs her to make up with Shingetsu. Anna, with a calm, pleasant look on her face, tells her sister that nothing matters except seeing Shingetsu suffer for what she did to her.
- Her face game throughout her mental breakdown is right up there with Higurashi with how contorted and horrifying she looks.
- Suisho reveals her true colors, and you wish she didn't. She's a manipulative sociopath that plays mind games with her victims until they break. Anna gets this treatment when Suisho leaves her side and then goes after Kuon.
- By the way, both girls end up erased from history and everyone's memories, save for those participating in the Granbelm. The Magiaconatus is blamed for it, but considering that it was Suisho that broke these girls first before they were defeated in battle...
- Kuon being manipulated by Suisho in a... very sexual manner.
- The big twist: Mangetsu was a doll all along, created by Magiaconatus to be a companion/helper to Shingetsu. Neither girls take the news well.
- Immediately after finding out the truth, Mangetsu returns home, only for her family to meet her at the door and... ask who she is. Her other friends don't know who she is, strangers pass her by, and most of her contacts disappear from her phone. It takes time for Mangetsu to even accept who she is, let alone her inevitable demise once Shingetsu makes her wish come true...
- On the flip side, Shingetsu is traumatized enough that she considers giving up on her lifelong crusade just to potentially save Mangetsu from fading away. She never meant to create an artificial being solely meant to stay by her side, let alone Magiaconatus reacting to her wish, and feels horrible that she cursed Mangetsu to simply fade away from existence.
- Episode 10 has Suisho giving one hell of a Breaking Speech to Shingetsu about the true nature of Granbelm and Magiaconatus. For starters, she twists and snaps the limbs and neck of Shingetsu's doll, each with a Sickening "Crunch!". As if that isn’t creepy enough, Suisho starts showing off her terrifying, inhuman nature as she dumps revelation after revelation onto a horrified Shingetsu; Suishou is depicted as a pitch black shadow with a Slasher Smile, while her spine contorts unnaturally in a complete arc.
- For a thing that supposedly is just a "thing", Magiaconatus seems to have a mind of its own, and is fixated on Shingetsu becoming the Princeps Mage, by any means necessary. Worse, all of the horrible things that have happened in her life, the Granbelm tournament itself, and Mangetsu's creation, were all Magiaconatus' machinations, designed to test Shingetsu's resolve and determination. She turned into a powerhouse, but at what cost?
- Suishou's reaction to killing Mangetsu.
- The ending to the anime, where Shingetsu fulfills her wish, but at the cost of her mortality and existence in the world. While she was able to wipe magic off the face of the earth, Shingetsu will be spending the rest of eternity wandering the world, with no one to really befriend or talk to. Shingetsu seems to accept it, though.
- There is also the fact that Shingetsu hints that she didn't entirely wish magic away, as suggested by the sudden appearance of possibly-Mangetsu as a new transfer student. Shingetsu may or may have fallen prey to the exact kind of mistake-making that she was warned not to follow by people like Mangetsu, and someday, humans may find a way to bring back magic and start the cycle of violence and abuse all over again.
