So a roar wouldn't make him scream, it would make him cry, alerting his parents, exposing the monster world, destroying life as we know it, and of course we can't have that.
あなたの唸り声では 彼は悲鳴をあげずに泣いただけです 両親は警戒し こちら側の世界が暴かれ 私たちの生活が壊されます あっては ならない事よ！