“Saving the future through the past!
The last prince of the Vanroa Kingdom, destroyed by the Empire’s invasion — Ransen.
He sets out with the children of his retainers to a distant foreign land,
and after struggling to survive, he rises to the rank of Sword Master at a young age.

However, due to a certain incident, he loses his power, and…”

Do you want me to keep it as a teaser (cut off like the original) or turn it into a full promotional-style summary?