There were two points of interest for Shima. The tendrils, and the people around him: Shima could push the people back at once, easing them away from the danger zone with shields of water, and at the same time, he was throwing up thick walls of liquid, solidified enough to keep the darkness from piercing completely. It was used to warp around Vance as he moved forward in this cluster of blackness. Standing feet from him to keep him from being hit by the dark extensions of Mink.
Because that seemed to be Vance's target. The young, bright haired man that was suspended in the air by the vines of darkness, seemingly unaware of all that was happening and helpless to stop it. They could protect the civilians as they pleased, but Shima was certain that it would all be pointless if Mink took them down.
If he advanced forward, moved himself further into the city and past the Stars and Stripes. There was no out right attacking him as was their order, and so Inao wanted to help his teammate get to the other man. To allow him to do as he saw fit. Awaken him, shake him free. Anything that could break the state he was in.