Review Detail of Bierbart in Cursed Speech in Highschool DxD

MC is pretty underpowered for the world he is in. usefull ability but can only use it a few times max, even if the enemies are weaker. Mainproblem is he doesnt have a wayto get stronger evven at chapter 18 except the chatgroup where he cant get max benefits because he is currently weak in relation to the others. he can also only strenghten his homeworld abilitys even though the cursed speech iss foreign too but that apparently is an exception. he also seems to .e unable to use other magic and doesnt want a racechange sadly. might be able to with cursed speech or maybe steal sacred gears.. might even be able to aquire foreign abilitys with it but i doubt thats where the story will head. interactions seems a bit rushed but still refreshing that mc is not a simp. sadly a bit narcistic with a rather meh look from the description but thats subjective