ME>YAGOME - Branches (called "yagome") growing from the bottom of the tree.(Yagome is just a SPROUT first but when it becomes a branch (EDA>EDA>YAGOEDA), it takes all the nutrition and can kill the other new growing branches on the tree) so would normally be removed from your BONSAI>BONSAI>BONSAI tree.

See Branch PRUNING.