is a Japanese manga series written by Saki Hasemi and illustrated by Kentaro Yabuki, creator of Black Cat. The manga was serialized in Shueisha's Weekly Shonen Jump magazine between April 24, 2006 and August 31, 2009, and the chapters collected into 18 tankobon volumes. The manga series' title, , is the English gairaigo (loan word) "trouble" and is the English loan word "love". The title is a pun on the words "love trouble", which describes the harem aspect of the series.