Moebius is also devoid of non-diegetic sound, with the exception of two scenes which mark the beginning of the film and the conclusion leading into the end credits.

While under the judgmental gaze of the gang leader, the son feigns penetration, mimicking thrusting motions on top of the mistress to avoid suspicion.

During a stay in prison due to his participation in the gang rape, he is assaulted by fellow inmates.

The father attempts to help his son by showing him how to masturbate by rubbing a rough rock against his skin.

The son is released from police custody when, due to his lack of penis, it is revealed that he was unable to physically penetrate the mistress.

She attempts to make amends to the family by re-igniting her sexual relationship with the father, only to learn that he is now unable to have sex due to him having given his penis to their son.

For the third and final appeal, Kim cut or edited an additional 12 scenes, reducing the runtime by 50 seconds more and removing all direct portrayals of incestual sex between the mother and son.

[10] In August 2017, charges were filed by actress A – who remains anonymous with her identity protected under the Korean laws on sexual violence – through the Seoul Central District Prosecutor's Office, claiming abuse during the filming of Moebius.

Actress A reported that Kim Ki-duk had slapped her across the face three times in front of the crew.

[12] Actress A took her grievances to the Korea Federation of Movie Workers' Union, and an independent investigation was conducted prior to charges being filed at the Prosecutor's Office.

"[11] The Prosecutor's Office ultimately ruled partially in favor of actress A, charging Kim a fee of ₩5 million ($4,450) for physical assault in December of that same year.

The Office did not charge Kim for sexual molestation, citing a lack of physical evidence.