Memorize is a time-travel fantasy manhwa that follows Kim Soo-hyun, who returns to the past with all his memories intact after humanity is nearly destroyed by monsters, using his knowledge to prevent the catastrophe and become strong enough to protect those he loves. As he works to change the timeline, gathering allies and facing enemies while dealing with the burden of knowing the future, the narrative explores themes of second chances, responsibility, and the weight of knowledge with strategic action and emotional stakes. Blending time travel, fantasy, action, and RPG elements with regression premise, the series delivers thrilling storytelling that appeals to fans of time regression and apocalyptic fantasy. Also known as Memorize manhwa, 메모라이즈, Kim Soo-hyun, time regression, and Korean action webtoon.