Jin acted fast, kneeling down and looking at Lin who had a now terrified look on her face and he looked very serious. "Go find mom and dad. NOW!" He said and waited until she nodded at him. She knew very well to take him seriously when he got like this.
Jin quickly rushed behind Hasumi. "Wait up! What's going on?" He asked running after her his one arm pumping like mad as he tried to catch up with her. He quickly closed the gap between the two of them, and spoke up as he tried to keep pace with her. "I'm not just going to sit idly by if something bad's going on. I want to help" He insisted as he followed her. He wasn't the type to just sit idly by, and while everyone else seemed to be scared, his heart was beating quickly and he knew that this was going to be fun. The Adrenaline was pumping through his veins.
((What if one of Jei's sisters was taken by the Purple lotus for her bending abilities. Both Fei and Mei are confirmed benders that could be younger and taken. That could be a good motivation for him to go with the group and hunt down the Purple lotus and help the avatar.))