Well, this was a turn. Not too sure I like it to be honest. He's the Son and Lucifer and Lilith, I highly doubt a sliver of a fraction take over. Unless it's a defensive action, though Ais's weapon would have never pierced his skin
I won’t spoil it but there’s a reason for it that will be explained, Haru’s soul was ill prepared for such power and now has to battle with something truly evil. Also if bad Haru isn’t your thing avoid the next chapter😅