The mangaka Yusaku Shibata was an assistant for both One Piece and My Hero Academia, this was pretty obvious from looking at his art which has a few hints from both of these mangas. I personally found these hints to be very subtle, it's not really something that you think about while reading.
The characters were pretty interesting, more specifically the main character and his twin brother. The main character, Kaname, is strong, hardworking and determined. He is scary looking and his stupidity makes him oblivious to how terrified everyone are of him. His goal was to be the main character, the hero, from his favorite show.
While his younger brother, Koshiro, on the other hand is calm, a genius and cunning. He is adored by all and very well know for his inventions. This lead to Koshiro being targeted. Koshiro and Kaname are the opposite in a lot of things, yet they share one similar goal that they've competed in since they were kids. They are eachothers biggest rival. Though one trait they share is that both of them can be a bit hotheaded at times.
Now the one character that I do have a problem with is Cheena the love interest and childhood friend of the brothers. She is a extremely stereotypical female lead, no personality, constantly gets into trouble and getting kidnapped resulting in the male leads having to save her, being unable to defend herself despite being able to fight, always being the one to worry about the male leads health, etc.
Now this manga is cancelled and that is something you could tell in the story because the pacing shifts. This manga did have potential and I am actually a bit sad by the fact that it was cancelled. It would have been interesting to see a manga about a boy being inside of his brother (yes I had to word it that way), in order to fight the bad guys and figure out why they wanted to get rid of Koshiro.
Overall it was an enjoyable read.
