The first time I played this I didn't know there were multiple weapons, but that was the only time I beat the boss. I feel like it's loaded with references I didn't get, and it reminds me of Iji of all things. But it is a nice little game overall.
I have virtually no knowledge of magical girl fiction or anime, so if they're references to any of that they definitely flew over my head. There were some parts where I thought "this is definitely a reference to something but I have no idea what". More of a feeling than anything I guess.