If Her Flag Breaks

If Her Flag Breaks (彼女がフラグをおられたら, Kanojo ga Flag o Oraretara), also known as Gaworare (がをられ), is a light novel series written by Tōka Takei, with illustrations by Cuteg. Kodansha has published eight volumes since December 2011. A manga adaptation and two spin-off series have been serialized in Kodansha's magazines. An anime adaptation produced by Hoods Entertainment aired in Japan from April to June 2014, and is licensed in North America by NIS America.

Plot
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.

Other Sources

 * ANN 2011 novel
 * ANN 2012 manga
 * ANN 2014 anime