[Just wait around? Really? Though he can't really think of many other options himself...but still!

The apparent teenager stands there silently for a moment - looks around at the (currently) empty platform - watches as the train runs by another time....aaaand flounces.]

If our only options are waiting uselessly or exploring dead ends, I'm going to try my luck with those dead ends. Come with me or don't, but I'm not staying here.

[Maybe he'll get somewhere other than his "home" this time! Like...Jingyi's home, or something! Yeah!]