Leeres is an assassin who longs for his death, didn't even realize he is the Grim Reaper. On his journey to find his end, he meets and saves a girl named Clair from death, realizing later on after taking her in that she is a Princess whose family he assassinated many years ago. What will happen if the two of them share the same roof, much less go to the same school? This is a story of an undying suicidal freak and a freeloader princess whose goal is to kill him.