Nishikage Seiya

Nishikage Seiya quietly and calmly ate a ton of food that his best friend Nosaka brought him.

Nishikage is kind of a quiet character but respectful and loyal to Nosaka Yuuma. He sees Nosaka as a heroic, authoritative person and acts as a bodyguard to him. He seems to agree and conform with all of Nosaka's decisions, never refuses to eat tons of food that Nosaka asks for, even though he's weak at spicy food or being full already. He later reveals that he follows Nosaka for the fact that the latter has been living his whole life to achieve a single goal.
When Mikado Anna reveals to Nishikage that Nosaka has a dangerous brain tumor, he becomes angry and sad about his friend, showing that he cares about his closest friends, and feels jealous of her for not being told about his sickness by Nosaka himself.

During his time with Inazuma Japan, he is generally shown to be a friendly and amiable person, though he can get frustrated sometimes when he is unable to stop a shoot, which he supposes he is undeserved for playing with Nosaka.