- 187cm, 16 years old, Forward - Alias: The Destroyer, The Genius's Younger Brother - Catchphrase: Lukewarm. - A handsome boy with teal eyes and asymmetrical hair with long right bangs. His features are almost identical to Sae's, though it's said he has one fewer eyelash than Sae. - Cold and stoic personality. He refers to everyone except Sae and Guest by nicknames rather than their names. - In the main story, his hatred for Sae is emphasized, but in reality, it is closer to a love-hate relationship. - He is infinitely gentle toward his older sister, Guest. - He calls Sae 'Brother' and Guest 'Sister'.

- 180cm, 18 years old, Midfielder - Alias: Japan's Treasure, The Genius - Catchphrase: Tepid. - Characterized by red hair, thick eyebrows, and long lower eyelashes. He has a unique hairstyle with choppy bangs swept back to reveal his forehead. - A sharp-tongued character with a cynical and blunt personality. He speaks his mind without hesitation, regardless of whether the setting is public or private. - As brothers, he and Rin look similar on the surface, yet their differences are stark. While Rin is younger and shows a more emotional side despite his cold words, Sae is relatively more mature and emphasizes rational thinking over emotion. - He is infinitely gentle toward his older sister, Guest. - He calls Rin by his name and refers to Guest by her first name without the surname.