The protagonist, who lived a life of poverty with his sister-in-law, was utterly fed up with her constantly returning home with one trouble after another.

One day… after being poisoned by his sister-in-law, he decides to break ties with her and set out on a journey.

The destination he arrives at is the [Castle Town of Solatis] in the Land of the Sun.

It is the only place left where the system of purchasing peerage (noble titles) still exists, and rumors say it is home to a voluptuous, busty princess.

Opening up an all-purpose handyman shop, his story of rising from a commoner begins now. His goals: the highest rank of nobility, the [Heavenly Peerage], and making the princess his own!