helppp

soo this comic is not from here but i think its on webtoons but i cant find it. if it is on here give me the link or if not just give me the link from webtoon/ the title.
basically the only parts i remember in the story is when a few participants i think <10 are required to kill a monster in an area in order to survive. when they killed one i think something will light up on a device they used (i think it was a watch) and there's less monsters than participants so a few people will have to die. they do this so they can select which people end up being "hunters". basically in this world there's a gateway that was sealed but monsters managed to evade it and go into the human world. the mc does end up becoming a hunter and i think somewhere in the story the mc and a girl (?) go shopping at a mall or something and a calamity happens and there's this bad guy which the mc needs to fight in self defense. that's all i remember and thank you like x10000 times if someone remembers the title. （/TДT)/