Yuu Watase's answer to Chobits. Extremly cute, and exactly what girls needed with the guys getting all those robot girls. Her artstyle in this is very freshing.
The art is kind of dated, but the story is fresh. Yes it's another girl pulled into another world story, but it manages to keep itself apart from others.
The artstyle takes a while to get used to, but even if you don't like it, you can't help but admit it's gorgeously detailed and intresting. Her story telling is very appealing to me.