This anime suffers from one major flaw that eventually made me lose interest during season 2 - the flaw of having way too many boring fillers - meaningless dialogs and interactions that are super boring, and don't drive main plot at all. If these series were abridged leaving in only plot driving scenes, than there would be probably 20%~30% of entire material... The rest is obnoxious, boring drama. I recommend Overlord and Sword Art Online over this.
Review of Log Horizon
