@Ratentaisou Well, since she had reincarnated into an otome game she thought her ending was set in stone, but as she hadn't acted like her game counterpart the story changed without her knowledge.
Since she heard rumors about her fiancé spending time with the games protag she figured the game...
Some of you seems to forget that 16 is the sexual legal age for most countries (Including this fantasy land), some have lower and as far as I know only two countries have it higher.
Japan has quite a large age difference on their prefectures, from 13 to 18.
And the different US states are...