On very rare occasions, some children retain memories of a past life, but only during their early childhood.

Normally, such an occurrence is rare and confined to the same worldline. However, whether by divine caprice or an exceptionally rare anomaly, a soul bearing memories of an entirely different world can sometimes transcend worldlines.

Such a child is the seventh prince of a kingdom.

The eldest son is the Crown Prince, the second son is a professor at the world's top academy, the third son is a master of diplomacy, and the fourth son has married into another country.

The fifth and sixth sons are geniuses in music and painting, respectively.

Wait? So what am I supposed to do?