August von Earlshide

August von Earlshide (アウグスト フォン アールスハイド, Augusuto fon Ārusuhaido) is the crown prince of the Earlshide Kingdom and Shin's closest friend. The two had a cousin-like relationship because of Gus' father, Diseum, who frequently Shin's grandfather, Merlin.

Appearance
August is a handsome young man with short blond hair and an average build for someone of his age.

Personality
Gus, as a prince was brought up in adult environment; thus when he met and was associated with Shin, his more natural personality was shown.

He likes to tease others like Shin and even his little sister May. He also likes to manipulate and is very cunning so he was called 'Black-Hearted Prince' by Shin as he was always being led by Gus.

Due to his different attitude towards Shin, it led Thor and Julius to feel pressured because they were both close to him since they were young but Gus never talked to them in a common fashion. Gus' fiance Elizabeth found it irritating too, so much she felt left out and have been jealous with Shin albeit thinking the two might be lovers. Gus' later eased her mind after he pushed Shin to confess to Sicily,

Chronology
Shin meets August on their first day of school. He is pleased that Shin doesn't treat him like anything special. After the initial testing, August is placed in S-Class.