Review Detail of Hentai_Senchou in Natsu Dragneel in DXD

Relationships are extremely rushed. He knew rias for a month or two and only met her at school. She died jumping in front of a light spear for natsu and he acted like he just watched lucy die. Then rias' family, which has known natsu for a similar amount of time hold zero blame towards natsu over it. Even though he was supposed to be her bodyguard and she died jumping in front of a light spear for him. She will obviously get revived somehow, though. The entire scene reeked of a "friendship" powerup. Too bad the author sucks at showing how two of his characters get closer. It was seriously just natsu being annoying natsu and rias going "oh, natsu..." Until she died because the grand magic games natsu after eating atlas' flame is somehow weaker than kokabiel??? How in any way can you portray natsu as being THAT weak? Especially after sparring with a frost giant every day for a month? After upgrading his flame by incorperating the god slaying flame and laxus' lightning in it? After getting told by igneel that he has gotten much stronger after getting to dxd???