Felix had a prideful feeling as he looked at Jack and Lindo sparring. He felt rather glad his emotions came back.
He felt empty when he had his emotions sealed, but now he felt as if his life was fulfilled, at least a part of his life was.
The fight between Lindo and Jack was quite 'intense' Jack attacked with all he got as he punched. He had improved his stance while he fought, and his proficiency increased the more he tried to hit Lindo. However, no matter how much of a genius he was, he couldn't even touch the corner of Lindo's clothes.
Felix could see that the little tyke was very talented in fighting.
His body was also quite abnormal.
As it had more strength than teenagers who were around 17-18 years old.
Even Felix, with his special ability, wouldn't have been his match back when he was fighting with the black bears, strength-wise speaking.