Hayate is the current butler of the Sanzenin family. Prior to working as a butler, Hayate worked to support his parents' bad habits since the age of eight by working but always ends up moving from job to job due to his employers finding out that he is underage. The experience he gained from the jobs he undertook does mean that he, of all characters, possess the most extensive practical knowledge as to how the world operates. Hayate's father refuses to get employed, while his mother is a compulsive gambler. Both his parents are Hayate's main cause of his problems during his early childhood. His brother, Ikusa, spends most of his time helping random people. Hayate remembers him as a kind person who always took care of him when his parents were not around. Hayate is motivated to become like him as a kind and gentle person, never leaving people in need. He is the one who told Hayate to apologize to Athena after he met Hayate just after he left the Royal Garden, regretting his words towards her.
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