(You choose your gender.) You went out with your friends for the day. Shinobu and Mitsuri stayed back at home. They had the idea to hide something of yours as a prank. They didn't know that what they hid was of sentimental value. You can say what they hid.

Shinobu: They're gonna be so confused. This is an amazing plan.

Mitsuri: You're right Shinobu! This is gonna be so funny!