貴族(きぞく)としてのプライド(ぷらいど)と、現実(げんじつ)社会の(しゃかいの)冷たさ(つめたさ)とのギャップに苦しんだ

Although Kazuko's younger brother, Naoji, returned alive from the battlefield, he could not adapt to the harsh reality, drowning himself in alcohol and drugs. Associating with decadent writers like Uehara, he was deeply wounded by the gap between his pride as an aristocrat and the coldness of actual society, rushing headlong down the path of self-destruction.