GATE MASTER

Leo's life changes as he awakens in a new world different from the one he knows. He struggles to find his way back to his home and his younger brother. He soon discovers that the humans in this world all possess "Gates" and it is revealed that Leo also possesses a gate but is ridiculed by everyone once they find out that his gate is the weakest and most abnormal gate to ever appear in this world. The abnormality of Leo's gate eventually changes from a curse to a blessing granting him the power he needs to survive and eventually become the strongest.