Review Detail of Na1gel in High School DxD: Only I Level Up

Gotta say its really boring, only training and dungeon fights , there is absolutely nothing happening storywise ... all we know after 19 chapters are that protoganist is horney on grayfia he have a meh relationship with his mother and sister "rias and vanalena" his brother "the lucifer" is dead and this we got in the first chapter, after that its been nonestop training and dungeon fighting or thinking about ways to train himself or future peerage its really really boring .. we know absolutely nothing about anything how the devils are faring without their strongest lucifer or how it have made them look to other pantheons or their relationship with em .. nothing about the fallen or angels only about the fecking training.. also he barley talk to anyone in the story just tossing it out there there is some dialogue with grayfia but nothing else almost no dialogue at all lol only him thinking things or talking to himself