A great start, but followed by a slow and progressive decay, until a very bad last arc. The 5 last tomes are absolute garbage with plot twists over plot twists. The harem side is complete bullshit, especially the very bad and gratuitous sex acts in the last arc (i'm generaly a good client for that, but it was infuriating and very badly handled). Also, the ties with Negima are quite badly handled. I am a fan of Negima, but this one was dissapointing. It's a sequel we didn't need.