: Mawari begins to suspect Sun's true nature after she briefly glimpses Sun's mermaid tail following a water-related accident at school.
: Nagasumi spends much of the episode frantically protecting Sun from Mawari's attempts to splash her with water. His desperation stems from mermaid law: if Sun’s identity is exposed to a human, she or the witness must be executed. Seto no Hanayome - Episode 4
: A disciplined student and the daughter of a police officer, her presence adds a new layer of tension as she constantly monitors Nagasumi and Sun. : Mawari begins to suspect Sun's true nature
: Mawari eventually uses cats to try and startle Sun into revealing her true form. However, she relents after seeing how much her aggressive tactics genuinely upset Sun. Character Introductions : A disciplined student and the daughter of
: The episode introduces Mawari Zenigata , Nagasumi's childhood friend and the strict leader of the school's Disciplinary Committee.
In episode 4 of Seto no Hanayome (also known as My Bride is a Mermaid ), titled the story shifts from the seaside to the city as Nagasumi returns home with his new mermaid fiancée. Summary & Key Events
: Though her role is minor in this specific episode, she appears as a recurring background character often involved in the school's chaotic events.