Reiger never considered himself a good person.
Although he would offer some assistance to those who are suffering within his ability, he would not risk his life for unrelated people when it was beyond his capability.
If it was necessary to let someone die, Reiger would not suddenly be overcome by a savior complex and act recklessly, causing harm to himself or those around him.
Simply put, he had empathy, but not excessive sympathy. Even if innocent people died miserably before him, he wouldn't sentimentalize it as his responsibility, thinking that his inaction caused their tragedy, and blaming himself for it.
Therefore, he could offer help in places he considered trivial, like helping refugees in the Meprose territory, while also ignoring deaths, like Yaga Masamichi and that Knight once tainted by the Abyssal Aura, refusing to save them.
In other words, his action or inaction was based more on rational consideration than emotional impulse.
