Reformation of the Deadbeat Noble

A brief description of the light novel Reformation of the Deadbeat Noble:
Irene Pareira is a boy who sleeps to run away from reality.
People mocked him, calling him a ‘deadbeat’, but he had no wish to change.
Until one day, he dreamt of a swordsman… It was a dream about a talentless man who had been training by swinging his sword for decades.