5 years is not that huge a leap... but when you consider Jai's age, it is quite a big leap! Let's just hope that arthritis hasn't set into his joints. Chances are that he really will have more white hair...
By the way, I'm sure people must have noticed that ealier on in the series, Jai had a lot more white hair than he does now!!! So, it seems like he gets younger as he time moves on... in that case, in 5 years time he will have no white hair at all! đ
God bless.