Board Thread:Theories and Speculation/@comment-27295021-20180308000450

Is it possible for an A-rank or S-rank jonin who's closing in on his elderly years with a lot of experience as a ninja under his belt to be able to use both fire, water, earth, lightening and wind nature techniques with rigorous training his their youth? At least individually? (Using two simultaneously is a geke genkai, isn't it?) 