Zeal

Zeal (ジール) is the younger brother of Geera, and the son of a Holy Knight who disappeared during a mission. Due to the apparent betrayal of his father, he is repeatedly attacked by some men in his town while his sister is away on missions.

Personality
Zeal was shown to be sweet and calm young boy who doesn't mind being hit with a rock and look up to his big sister, Zeal shown to dislike the Seven Deadly Sins due to his fighting them

Plot
After Geera's returning from her mission, Zeal welcomes his sister, and ignoring her questions as to how he received a bruise on his face, questions her whether she had her hair cut, which, he says, is very cute now. As she hugs him, she tells her not to work very hard and hurt herself, and not to lose to the Deadly Sins. She then apologizes, since Zeal is always hurt due to her leaving him back, and catches a stone thrown by three men towards him, who call the two "disgraces of Holy Knights". The boy replies to his sister that though their father's disappearance lead to many deaths, he believes in him. When he asks if she became a Holy Knight due to the same reason, she answers that she became one to protect Zeal, and be someone whom he could be proud of. Zeal replies that he is fine by himself, which leads Geera to notice multiple bruises on his hands, and kiss him on his forehead.

Abilities/Equipment
Zeal is an ordinary child with no super-human abilities.

Geera
Zeal evidently loves his sister, declaring that he will bear anything for her sake. She, in return, also loves him very much, having similarly declared that she will do anything for him.