@Oneesamaa
In his past life, he was just a tool with no emotional attachments. he didn't know the joy and love of friends and family. and those new emotions are causing him to rethink how he does things compared to how he would have i his past life.
@Oneesamaa He literally just said he didn't kill innocents in his last life, plus, he's thinking that some of the soldiers he has killed where conscripted, meaning they aren't real soldiers, but normal citizens forced to wear the uniform.