Denjiro Yonemura Science Kit Mysterious Keychain - Dolphin & Star Used item Minor scratches are present. For those who don't mind. Denjiro-sensei's Mysterious Keychain Look through the two windows in the middle and observe the light! Then, the light will appear as dolphins and stars. City lights, traffic signals, car headlights, Fireworks displays and illuminations... Let's try looking at them in various places!