[@Crimson Lion][@Double][@Dezuel] Alright guys so heres the little explanation I devised for Lisa and her presence. She is the substitute coach/mentor of the team while Chiaki Naomi is the leader. At the same time she is also Nobuya Academy's ace gunpla battler-which is obviously a big thing there. Meaning in bigger tournaments she will most like be participating on the team. For now, we can just assume that Lisa came of her own volition and Chiaki was the natural selection to guide the group. 

I make little confusions like this one some kind of quirk of hers.