Lady Cherish Archives, a Marquess's daughter, was walking home after her engagement was broken off and with no carriage available when she suddenly remembered.

That in her previous life, she was a Japanese person from the countryside who had relied solely on cars or bicycles for transportation.

"Let's make a bike! Rederic!"

"A b-bike!?"

Cherish returned to her domain with Rederic, her handsome attendant and a former slave from a neighboring country, and finally succeeded in building a bicycle.

However, as expected, popularizing bikes proved extremely difficult in a country where carriages, horses, and donkeys were the sole modes of transportation.

Though Cherish was disappointed, a massive horde of orcs suddenly invaded from the neighboring country!

A national defense crisis! A domain crisis!

A crisis of separation from Rederic, who hails from the neighboring country!

Just then, His Royal Highness the Crown Prince, leader of the Holy Knights, set his eyes on her bike––?