Kedarugena Koshaku Reisoku Ga Kawatta Riyu.

The noblewoman Lientia suddenly regains her memories of her past life one day.

This world is the setting of an otome game she only played once—and she is the Villainess destined for a bad end!?

To avoid ruin, Lientia throws herself into a rush of marriage interviews, trying desperately to break off her engagement with the prince. Appearing before her is the listless, zero-motivation Duke's son, Isaac.

She accidentally pushes him into a river during a completely unexpected mishap after he remarks, "Is there anything... fun in life?"

Lientia clutches her head, believing she is utterly doomed after he silently walks away.

—However, the next day, a shocking declaration comes from Isaac's mouth:

"Lady Lientia has become my reason for living."

...Wait, how did that happen!?

Thus begins a totally unexpected romance—!