Hajime averted his gaze away from Aiko and unhesitatingly nodded at Shia, then he let out a vial from "Treasure Box." At that time, the surrounding people finally ran up towards Hajime and the others with uneasy expressions as they let out cries from their mouths. The students, David, and the Knights were particularly shaken, they were half in panic. They were asking Hajime about her safety, stepped back when they saw her appearance, and tried to cast recovery magic which was ineffective... towards such people, Hajime's one word, "Silence," with killing pressure made them stepped back and keep silent.
Even Hajime was slightly surprised by what he had said. His anger because Shia's injury was more than he expected. Apparently, without him noticing it, he had recognized her as an important companion deep in his heart. Therefore, he was unbearably angry towards the Demon race that came in contact with Shimizu and himself who had forgotten the possibility of him still nearby.
If he do something to Aiko and the others when Hajime's party went to the frontline, the possibility it become a chaos was high. However, because he actually didn't do anything, he was convinced that he didn't want to do it directly, without any basis to it.
As a matter of fact, that demon race person have thought to assassinate Aiko when Shimizu was on rampage, but he lost the chance because he was stupefied by Hajime's party which was out of the normal. Afterwards, as he was looking for a chance, the talk between Shimizu and Aiko started. Thus he thought to leave killing Aiko to Shimizu as he looked from the distance, but he guessed that Aiko would be recaptured in the last moment by the unstandard Hajime, so he cast a magic which specialized in penetration to pierce Shimizu and Aiko.
However, even though the Demon race was quick to see that opportunity, there was one miscalculation. That was, if thing went well the trajectory would make it hit Hajime and the others, erasing those risk factors at the same time, but Shia's peculiar magic was activated. That was "Foresight." Shia who was behind Hajime naturally would be hit by the trajectory along with Shimizu, Aiko, and Hajime, so she dashed out to "break" the future she saw.
Thanks to that, the future where the attack went through Aiko's head and she immediately died was avoided. Shia had put her body in the line to change that future. Even though he was doubtful on why she put her life for Aiko who wasn't not intimate with her, Hajime would not treat an important companion who had worked her best coldly. Therefore, he unhesitatingly used the scarce "Holy Water" for Aiko. Because there was no time, it was the most certain thing to use.
Hajime held Aiko who was supported by Yue, put the vial in her mouth and poured the holy water little by little. Aiko looked at Hajime who didn't take Shia as the top priority with criticizing glare, but ignored by Hajime. Currently, he prioritized Shia's will than Aiko's or his own intention. That's why he just poured the holy water as discussion wasn't necessary. However, Aikos' whole body began to convulse and couldn't be moved as she desired, so she couldn't swallow the water. Rather, it was possible to enter the lungs and made her vomit.
Hajime judged it was impossible for Aiko to swallow the holy water by herself, he put the remaining holy water inside his mouth, and he unhesitatingly poured it directly into Aiko's mouth.