'For twenty years, stuck in a quiet corner of the Count’s estate working strictly as a guard knight, it was an open secret that I was secretly the strongest warrior in the Eastern Continent.'

However, the moment a heroine from the Rofan world steps into the Count's household, the widows' eyes begin to gleam.

“Sir Rian, tonight… would it be possible to have a ‘consultation’ in my room?”
“Rian, my body feels so hot… could you nurse me back to health?”
“Lord Rian♡ This is… just a small token of my appreciation.”

To make matters worse, even the widows' daughters join in.

“Master! I have always adored you!”
“Rian! Marry me, not mom! Become my guard knight instead!”
“Um… do you happen to have someone you like?”

Mother-and-daughter duos in an isekai world?
All I wanted was to quietly retire, but…

And now, chaotic times have finally descended upon the continent.
Carrying my halberd over my shoulder, I marched steadily onto the battlefield.

It is time to show the world the true strength of the unofficial strongest knight in the Empire's East.
By the name of Rian Limeberg, I declare:

“Come out, Protagonist! Let’s settle this! All the heroine mamas belong to me!”