Adventurer 'Benzak' hides in a cave with a map, his grandfather's heirloom, in search of the 'most beautiful treasure'. However, a more dazzling and beautiful being than the treasure,'Rhys', was waiting in the cave.

"You've finally come to keep your promise with me?"

Rhys soon reveals his gigantic figure along with unknown words...

(Source: Mr. Blue, translated)

Note: Chapters 1 to 4 were originally published as part of the anthology Seongbidan Tteokdae-Kung! S2 (성비단 떡대-쿵!★ S2), while the 3 side story chapters were included in Seongbidan Inoetammi (성비단 인외탐미).