A story of the struggle of Ayaka, a girl who believes in the return of her parents and continues to protect her younger brother! Live in the ``Sailendo'' where the hermit lives and fight against the monsters that attack humans!!

Ayaka, who has no relatives, arrives at ``Sairendo'', which is rumored to be a haunted house. On the surface, it's an antique store, but it's actually a house where immortals who have committed crimes stay. Moreover, the freeloader test is to accompany a boy (?) called Horai to exterminate monsters...? Ayaka and hermits' mysterious life together begins now.