This is so stupid, not only is he being considerate to a literal CHILD KILLER who was killing student and she's part of a super evil organisation. He';s telling her things she shouldn't be told cause what if someone from the organisation heard him? his is sooo very stupid.
Also I'm so sick of seeing series like this where supremely evil people keep being given chances that noone but a complete amature would give. We;re supposed to believe the MC is a god on the battlefield and then does stupid shite like this?