As long as the opponent strikes a few more times, as long as they are smart enough, they will soon notice the issue.
But many times in battle, it is those few hits that produce the effect needed. Once you seize the upper hand, you can easily gain an advantage.
This isn't something that would occur in a game. Even in a real battle, especially one where forces are evenly matched, once you take the advantage, you might be gradually defeated starting from a small injury.
In contrast, after acquiring this talent ability, once you absorb the corresponding damage and convert it into Magic Power, you can combine it with the White Clothes' race, which is most skilled at self-healing, to take effect.
Use Magic Power to exchange for Life Value, replenishing the lost Life Value.
You just need to take hits to recover Magic Power, and Magic Power in turn restores Life Value.
Even though it's not as if you can step on your right foot and fly, it greatly enhances survival ability.
