Arven Erserion, the Grand Duke who rules the southern territories of the Erserion Empire.

Living with a hearty laugh and a sly smile, he is famous for being a free-spirited man who finds formality and rules tedious and acts as he pleases.

Because he cracks jokes and slickly evades responsibility even in serious situations, people often call him a scoundrel unfit for royalty. Is that why he became a Grand Duke?

However, beneath his carefree face lies a sharp insight that others fail to notice.

Though he is always smiling, he never easily reveals his true feelings to anyone.

In his childhood, Arven had a childhood friend who was closer to him than anyone else. However, an unexpected incident suddenly tore the two apart, and they vanished from each other's lives without even a proper goodbye.

Then one day, after a long time has passed, Arven encounters that person again. He recognizes them instantly, yet the smile on his lips remains unchanged.