Help me find this pls

Its a bl abt these two guys in a zombie apocalypse, and their trying to find this shelter so they an reside. his black haired short guy has this visual memory skill and uses it to memorize the way to this shelter and he always carried a suitcase. and the other guy i think did judo or tkd (not sure) and comprehends human emotions but doesnt understand why he should follow these set of rules to please someone (i only read once so i could interpret this wrong TT) its a manwha