Dullahans are demi-humans whose heads are separate from their bodies. Naturally, Tetsuo is intrigued by the unique traits of dullahans, but Kyouko is just as interested in learning more about her own body. Tetsuo has the idea to ask the opinion of someone outside of his own background in biology, so he takes Kyouko to meet Souma, an old college buddy.
If the subject's okay with it, 
what's the problem?
،إن كان موضوع البحث لا يمانع
فما المشكلة؟
Wenn das Objekt damit einverstanden ist,
ist doch alles in Butter.
Si la persona está de acuerdo,
¿qué problema hay?
Si la persona está de acuerdo,
¿qué problema hay?
Si les intéressés sont d’accord,
où est le problème ?
Se il soggetto è d'accordo,
che problemi dovrebbero esserci?
Se o paciente consentir,
 qual é o problema?
Если изучаемая согласна,
что в этом плохого?