Enjoying it so far, though it seems that these Prince’s are some kind of stupid in these Otome manga that it’s pretty much a trope
1. Mad Dog Princess: second prince is stupid, manipulated, and abusive. First prince is a schemer and an ass
2. I’m a villainous daughter: stupid and
3. The villainess is adored: former fiancé prince dumped her out of the blue to everyone’s chagrin. New fiancé prince much better.
4. Since I became a saint: actually a big misunderstanding on both their parts...
5. For certain reasons: crown prince has noble intentions but fails to see a conspiracy the MC and his brother are countering
6. Slow Prison Life: no one in the kingdom is a match for her intellect; yet he thought it was a good idea to lock her up...
7. When I woke up: freaking poisoned MC and knocked into a non-aging 20-year coma. Didn’t exactly cover his tracks and tossed in dungeon
I especially recommend 1 and 6.