Oil Catch Can Help!

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Hi guys, I bought an r32 gtr with an oil catch can in it. Had a closer look the other day, I noticed a few things that I wasn't too sure about so I feel the need to ask you buys on here who may know lot better than me.

Ok, the oil catch can has a return line which drains the oil back to the sump that I had no doubts about it. But there is no ventilation on the catch can itself, as I have seen other catch can all had some sort of ventilation on the can. Next is that I noticed there is no PCV valve on the left side of the motor so its not running on PCV. There are only two big hoses from those 2 breathers on the cam cover to the catch can and a return line from the catch can to the sump. Last is on the inlet side, from factory there should be a hose that connect the cam cover to the intake so it can draw fresh air. So my concern is now from my understanding, there isn't really any ventilation for the crank case pressure so it might be over pressurised by the blow-by. Ive had the car for 2 weeks now and been driving it hard and it hasn't showed any problems like noticeable oil leak from gaskets or dip stick popping out etc, but my concern is still there.....

So please if any 1 can enlighten me here about what is going on with my breather system. Thank you!