Sakura
"Pfeilspitze fallen lassen! Große Verbreitung, Sternenexplosion!" Sakura shouted as she saw the creatures move apart, even faster than before.
Immediately, the head of the arrow exploded, sending the smaller spheres flying apart. Then, they all fell down towards the creatures, the spacing calculated so that they would all land around where the creatures would have moved to.
"Explodieren!" Sakura shouted as the spheres approached the ground.
Once again, the small spheres exploded, producing a wave of corrosive darkness. The size was smaller than before, but it was enough to kill any creatures in the immediate vicinity.
Then, having noticed that the creatures had turned around and were coming back towards them, and that she had a clear view of them as they approached along the empty pavement, Sakura changed her approach.
"Schnellfeuer!" she shouted as she began to create more shadow arrows.
This time, instead of charging the arrows, she simply fired them off rapidly, each one aimed at one of the oncoming creatures, a blizzard of arrows that would be difficult to dodge, especially for an approaching enemy. At the same time, she summoned up several more of her shadow creatures, instructing them to keep the creatures at bay.
Shirou
Just as Shirou reached the rooftop, he heard the men call out.
"Fuck!" he said to himself as he realised that he'd left them and Sakura undefended.
Realising that he didn't have time to get off a proper shot before they arrived, he immediately jumped down from the rooftop, landing beside Sakura, taking care not to get in the way of her shooting.
"Trace on!" he said, summoning up his trusty twin swords once more.
Then, he threw the two swords in the direction of the swarm, one heading out a little to the left, the other a little to the right, the attraction between them sending them in a curved path designed to cause them to cut through as many of the creatures as possible before meeting at the rear of the swarm. Tracing two more, he repeated the attack, continuing until the creatures had come into melee range.