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Last checked: February 11, 2015
Kanojo ga Flag o Oraretara, AKA Gaworare, title translates to If Her Flag Breaks. Was a 2011 light novel adapted into a 2012 manga adapted into a 2014 anime.
Hatate Sota is a high school boy, who has an ability to visualize "flags" for future events such as "death flag," "friendship flag," and "romance flag." Despite the flag-viewing ability, he avoids making friends with others due to a trauma he experienced in a ship submergence accident. Four beautiful girls get interested in his strange way of living, and they begin to live with him at the school dorm by force.