Master Cocytus

''Silas, I'll only tell you this once so listen well alright? This world is filled with ridiculously strong people. Even from within this forest you hear stories of Sanjo Vista, Kenshin Suzuki, even of that legendaly old geezer Harry Houdini. But remember this Silas. All legends were born as normal kids. Only through hard work and sometimes a torturous experience would they rise out to be on par with gods. Just because you were the lone survivor out of everybody in your town, just because you spent everyday training...and just because you've lost me does not make you a Legend alright? So train hard, Live life and remember...you're the only proof that I once existed...so...make sure...you don't die...until...you...die.''

—Master Cocytus' final words.

Master Cocytus was the former Master of Silas Cocytus. He took Silas in after his town was destroyed by a heartless Dark Guild, and adopted him, giving him the surname of Cocytus. Prior to the attack, what Cocytus did or even who he was is unknown. It would seem that he was well known in the region of Bosco, and was a master of both Light Magic and his custom made Flow and Compression.

Known Facts
The only current evidence of his Appearance is the word of Silas and a crude black and white drawing of him

He was the creator of Flow and Compression

He had an acute mastery over Light Magic and at one point even offered to teach it to Silas

His death was caused by a now destroyed Dark Guild

The surname of Cocytus was well known in the region of Bosco

The alias "Decapitating Arson" came from a trick he used to do. The trick involved getting an animal and playing with the light rays, making it appear as either their head has disappeared or their head was alight.

He rescued Silas from the destruction of the town

He lived in the Canvas Forests, very close to the Source Tree.