Kaede Nonohara

Kaede Nonahara is the combat butler of the Azumamiya family. He encourages his master to be a gentleman and to be manly enough to fight his own battles even if he were to lose. However, if his master were to act as a weakling, he will educate him by beating him senseless. Kaede is very quick and is able to do a Tatsumaki Senpuukyaku (hurricane kick) like attack. His ultimate attack is the Safety Shutter: Grand Explosion Immolating Dark Murder! which is a fire attack released from the edge of his sword in the shape of a dragon that engulfs the opponent in flames. Kaede's only weakness is seeing his master getting hit by his own ultimate attack. (Source: Hayate no Gotoku Wikia)