My Dearest Self With Malice Aforethought

Just like any other university student, Eiji Urashima's days are filled with hanging out with friends and searching for romance. After a night of drinking on October 23rd, Eiji returns home to find a stunning girl from his school, Kyouka Yukimura, claiming to be his girlfriend. Despite having no recollection of their supposed relationship, Eiji goes along with it until strange events from the past few days come to light. When Eiji realizes that three days have passed without his knowledge, the situation becomes more concerning. To his shock, a magazine writer reveals Eiji's dark family secret, leading him to embark on a quest to mend his life and win over Kyouka's understanding of his past.