Chains.
'What do you mean?' Isaac asked inside his mind. The children and Darth anxiously looked at Isaac, who seemed to be deep in thoughts.
'I don't know what the hell is wrong in your body, but there seems to be some shackles placed in your body by someone much stronger than me, but Fountain of Life is a blessing that won't completely remove your shackles, but it will still help.' The voice said calmly, with slight confession in his tone.
Since he met the white-haired young man, he noticed that there was something wrong with him, but he couldn't figure it out completely.
At first, he thought it was simply a disease, but when he looked at him closer... It was like there were some chains shackling him down, which stopped his strength from growing over a certain point.
Isaac frowned and then remembered the error message that stopped him from increasing his Strength Stat.