To provide a mysterious indirect lighting system having such a dynamic dramatic effect that a modeling such as a face of a character formed on a reflection part is viewed in a way that a direction is turned to follow the movement of a view point of an observer.

The indirect lighting system is provided with a casing including a window formed of a transparent resin on a front surface and serving as a dark filter, the reflection part formed on an inner side of the casing and having a concave surface shape for forming an inverted form with a convex surface modeling the face or the like of the character as an original form, and a light emitting part formed on a front bottom of the reflection part and having a light source such as an LED lamp.