previously [Back to Step One : Stare One] jiang cheng noticed his brother acting weirdly since last week, and it only became worse when they arrived to gusu. and wtf is wrong with this Lan-er gongzi ? not even returning the simplest courtesy of greeting?? AND.. Why is he hugging his brother!? he needs answers and he will get them! time travel au students at gusu lightly light angst not necessarily but top lan / bottom wei