("Remember you can't interfere with the war..") The system could sense the rage building up within him, so it quickly reminded.
Gustav recalled the conversation at the tent base of operations where the officers had advised him several times not to interfere with battles happening between citizens or situations like this unless he was directly involved.
According to them he staying hidden most times was the best, so he wouldn't attract attention to himself.
His power level was among the highest that could be found within the city, so it would pretty much get suspicious if he kept revealing himself, which was why they advised him to only battle in situations where he couldn't escape from.
'I know... I wasn't gonna interefere anyways,' Gustav answered without showing any expression whatsoever.
("...")
The system remained silent after hearing that, and they kept watching what was going on.