The principle of the Southern Crown Strike is very simple, it's about accumulating energy and releasing it all at once. Charging for one second or ten seconds results in vastly different power.
The difficulty lies not in the charging, but in maintaining stability during the phase from release to hitting the target. If stability can be maintained, it doesn't matter if the charge lasts a hundred seconds or even half an hour.
Furthermore, the strength generated by one second of charging varies from person to person. The strength of one second for the Southern Crown, and one second for the Star Progeny Master, are completely different, so there's no way to measure specific power.
However, when the Star Progeny Master releases a Southern Crown Strike, it must be intended to harm the enemy. So how to determine if it can harm the enemy?
It is of course judged by using oneself as the standard, so each light ball is inherently capable of injuring the Star Progeny Master.
