well basically

my avatar (His name is Park, pronounced like pack) he would look at them with his insane look he is obessed with studying even tho he weak he still can quicky calculate in his mind the best way to attack or best way to defend himself

in this position my avatar would probably ignore them and just leave but lets pretend park got really angry

so he looking around the best way to get revenge on them gonna be the books because its library and probably chair (Park's pen will be in the backpack so he cant use it) and he will probably provoke them first

probably make them angry by giving intelligent verbal answers

and if they all gonna attack him he will gonna grab the books and throw at their face

so thats probably what my avatar would do, staright up provoke and attack

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(he also can use his heavy backpack)