Sakura
Entirely unsurprised by the girl's apparent lack of concern for the man, Sakura continued to head towards him. However, before she could reach him, to her immense surprise, the other girl appeared next to him, poking him and asking if he was OK. However, despite her surprise at the girl acting like she might actually care about anyone but herself, Sakura went to work. Her work as a hero alongside Shirou had meant that she'd taught herself first aid and some basic healing magic, and she knew she could do more to help than the other girl could.
Reaching the man, she knelt down next to him and reached for his neck, taking his pulse and listening for breathing. Relieved that his heart still seemed to be beating and that he was still breathing, she set to work on dealing with the problem. Judging from the hole in his hand and the blood that was everywhere, he'd obviously lost a lot of blood, and she knew she needed to stop the bleeding before it got any worse. Whilst she could fix the hole in his hand, her magic wasn't good enough to ensure the wound would not become infected. So, before she did so, it needed to be cleaned-out.
"Is there a first-aid box in here?" she called out. "His wound needs to be cleaned."
Then, she wrapped a shadow tendril tight around his wrist to act as a tourniquet, before reaching down and putting her hand on his, before beginning to chant.
"Diese Wunde wird gerinnen", she said, her face screwed up in concentration as small, black tendrils flowed from her hand and into the wound. "Das Blut fließt nicht."
She continued to concentrate for a few more moments before pulling away, her magic having stopped the flow of the blood. Even after she released the shadow tendril wrapped tight around his wrist, there was still no more blood flowing from the large hole.