The author keeps on throwing out random characters with no descriptions or impression at all, like on the first chapter she describes how she 'batted with imps' when reincarnating and how her sister 'betrayed her' -that's it. She literally just said "my sister betrayed me and I battled imps in the underworld" thats her WHOLE backstory. The author doesn't describe her profession, life style, event's leading to betray -abruptly dumping infomation every chapter then moving on to the next sequence of events
The story starts on a tragic note, death at a young age due to illness and abandoned as a prince when he is reincarnated. The whole first half of the story is a him living in a state of isolation in the castle while he is training his magic. Which is done in a quite interesting and receptive way, as the 'doll prince' who has no emotions. The character of the prince himself is quite interesting and deceptive of his outward appearance with this kind of naive curiously and energy.
However, the second half of the story goes down hill. Full of plot wholes in a span of a few chapters the character and setting are thrown away completely for the generic Japanese protag -kun, who is super dense and naive with lackluster situational comedy thrown in. It's like the author instead of going from A->B decided to go from A->Z with no clear direction of the story, which is understandable why this story was discontinued.