As a young boy, Prince Oscar Lyeth Increatos Loz Farsas was afflicted with a curse by the Witch of Silence, rendering it nearly impossible for any woman to conceive his children. After fifteen years of unsuccessful attempts to find a remedy, Oscar decides to seek assistance from a different witch. He sets out for the Azure Tower, the residence of the Witch of the Azure Moon. This tower is infamous for its deadly traps, challenging puzzles, and fearsome monsters, with no one having reached its peak for many years. Yet Oscar climbs it with surprising ease and encounters the legendary Tinasha, who appears as a youthful girl despite being centuries old.
Once Oscar explains his dilemma, Tinasha notes that breaking the curse would be exceedingly difficult but proposes instead that he find a partner able to withstand its consequences. Realizing Tinasha herself could be that candidate, Oscar asks her to marry him, but she initially refuses. Persistent, Oscar keeps pressing until they reach a compromise: Tinasha will leave the tower and reside with him for one year while they continue searching for a solution. When news spreads that Tinasha has emerged from her isolation, they draw the attention of her former allies.