Review Detail of cardo_sinclair in Reborn in Danmachi as a dragon kin

There is nothing special about mc. Author say mc is dragon kin but the only thing he has that resemble a dragon is tail and horn. Mc has no dragon pride, no specialty othe than being reincarnated and takes so long to even level up that I nearly think decades passed. 2/3 of the novel is him being level 2. Mc killed so many level 1 and 2. He be fighting level 3 and 4 and not level yet. Bro this novel is insufferable and author be saying he has reasons for them and I ain’t seeing nothing