Lenn was quick to move-in with Jacob after he was finally discharged from the hospital. Just as she had said, there was barely anything for her to retrieve from her own place to put into his apartment. Not that she dared go back to her old place anyway, for fear that there was an ambush in waiting from the same people that had attacked her, and injured Jacob. Still, she had procured some stash of guns and ammunition from secondary storage and started hiding them around his apartment.
Finding a gun under his sink or behind a shelf was a constant reminder that, even though Lenn had left her old life behind to settle down with him, she was still haunted by the paranoia that was left over. He could hardly blame her after the attack on her apartment, which nearly got him killed. It also reminded him of his promise to stand by her side while she fought to live her own, normal life beyond the old job. He needed to improve his skills if he stood a chance of fighting back if they came for her again.
Jacob was so focused on his task--learning to move fast enough with his own sword skills to be effective against guns--that he was putting himself at risk of going back to the hospital. He started his training not a few days after he got discharged.
Just because the hospital let you go did not mean you were at 100% immediately, and he felt it after a single testing swing of his sword. He tried imagining deflecting a bullet with his sheathe, but the swing caused immense pain his shoulder where he had been shot. It was so intense that he thought he might have re-opened the wound and he had to stumble over to a nearby oak tree to lean against it and breathe heavily as the pain subsided.
After opening his eyes, he noticed a young female student already seated there.
"Oh! Uh... Ouch... Sorry, if I surprised you. Just... Ow..."