Substitute Sister vs. Second Prince

As the Second Prince came of age, the search for his bride began.

However, the sister who was meant to attend the royal palace eloped the day before.

All that remained was her elder sister, so alike she could be mistaken for a twin.

...A month, then? For just one month, I'll take my sister's place.

A work submitted for the Otherworld Summoning Collaboration Project 'Termia Stories +'.

*(Note: This is not an otherworld summoning story, as it's an entry in the bonus category.)

*Also posted on other sites.