Back when they were still in Totto Land, Mousse realized something during training: strength and endurance could be trained continuously until the body had fully matured, but agility, balance, and especially flexibility would peak during adolescence.
Thus, after reaching adulthood, those latter three attributes—particularly flexibility, which conflicted with strength training—would often become the greatest weakness in one's physical fitness.
Of course, generally speaking, even if they were somewhat lacking compared to other attributes, they would usually still be sufficient. It only became a real problem for someone like Charlotte Oven, who had a way to make his muscles exert strength beyond their limits.
That was right. Charlotte Oven had previously been afraid of injury and had not dared to push his strength amplification to its limit. Strictly speaking, it was not that his muscles could not endure it, but that his tendons and ligaments could not bear the strain.
Huo Lisha, meanwhile, had awakened her Haki at the age of six. After six years of nourishment, her physical development had become more balanced. Combined with the fact that she was still young and naturally more flexible, her ability to withstand explosive techniques was far stronger than Charlotte Oven's.
Charlotte Oven, as well as Charlotte Daifuku, who possessed the same "Overheat" ability, were no longer young. They could no longer benefit from Mousse's discovery, but perhaps one of their younger brothers or sisters might find it useful in the future.
Even Mousse himself, who was not currently known for combat prowess and possessed no explosive techniques, might not be without hope of benefiting from it someday.
And even if that aspect proved useless, the fact that activated Haki could promote physical development was already excellent news for Mousse.
Although Mousse was currently limited by his weak physique, and his Haki reserves