Koushaku Reijou No Tashinami Vol. 3

An OL gets hit by a truck and finds herself suddenly in the world of the otome game she’d been playing earlier in the day, but rather than the lead she’s now in the place of the villain! On top of that, she remembers that the “bad end” for the villain is getting sent to a nunnery…
In Vol. 3, there’s revolution in the city and there’s a worry certain taxation irregularities may be discovered, and then, a mysterious young man arrives!
Notice: This manga is written in Japanese.