For people who don't understand the last chapter xD.

Well, L.Joe saw Yongguk from B.A.P. So he was shock. He then report this to the rest of the members and all of them were shocked. And only one thing that they know and it logically make sense. The deal that was made 2 years ago is happening. 2 years ago, TeenTop didn't won the fight for their own territory so B.A.P won. TeenTop doesn't want to be discourage by other people and B.A.P knows that. So B.A.P make a deal. B.A.P will let Teen Top off and pretends there is no fights between them. But if TeenTop saw a B.A.P member roaming around their territory, it means, something really bad gonna happened. TeenTop is now in trouble. The TeenTop use their brain . How ? God knows how .
So they came up with a possible meaning to the sign. B.A.P are
gonna do something to their close or love ones. So Teen Top need to protect their families including You. While protecting their loves ones, they will try find the victim. 

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Continue with the story :D 

Weeks passed by in a speed of an lightning. TeenTop still haven't found the victim. While you on the other side, thinking . Why are the TeenTop so quiet and didn't bullied you ? You thought the had learnt their lessons . So you happily do your work in the classroom. But . You stopped again. Thinking why are they really so quiet ? And why do they look so serious ? Thats not the Teen Top you know .. Its the op