Carmine was reborn into a fantasy world. But it isn't like all those other people who are reborn into a completely unreasonable, overpowered scenarios; all he has going for him is being the actual emperor from birth! He's born helpless, the way all newborns are, instead of becoming some kind of destined hero. He doesn't even get to rule because the adults do that, while he's surrounded day and night by people taking care of his every need. And one day, the nobles might even decide they don't need him and have him killed! Talk about hardcore mode!
And if that feels like it has to come across as really whiny and entitled... Yes. Yes, it does. The self-pity for being born into a life of leisure and privilege, but not becoming the winner at everything, is pretty much constant. That bit about this being hardcore mode? That's not my irony, that's the protagonist talking.
What else is there? Pretty much all Carmine does in the entire volume is listening to maids and ladies in waiting, infodumping the political situation he learns from that at the readers, and secretly training in magic in order to fight off potential assassins.
And what isn't there? For starters, any reason to actually care about Carmine. He's an enigma we learn almost nothing about. He barely remembers his past life, he doesn't form any connections, doesn't care about anybody or anything that isn't his own survival. Even for a blank slate protagonist, he's exceptionally blank.
If being reborn as a weak royal child and having to deal with adversity in the form of corrupt nobility interests you, try reading Reincarnated Prince Herscherik instead. That one has a likeable, active, interesting protagonist with an actual personality who manages to do incredible stuff while having all the resources of being an overlooked child.
