Did Jinu ever come across other Hunters in the past?

Just for fun - does anyone think that Jinu ever interacted with other Hunters in the past 400 years? 400 years is a looong time and wouldn't someone as clever /cunning /resourceful as Jinu been at the forefront of demon ventures into the human world? And thats why he is stunned to realise Rumi is something different to the usual huntress?

Or was he depressed in a corner for all that time -not partaking in demon movements- and only decided to shake it out before the events of the movie?