Karin Sasamori (笹森 花梨 Sasamori Karin ) is a member and the founder of the "mystery club".
Karin has golden-orange hair that is tied in two spiky ponytails where there is a pumpkin hair accessory on the right side with bangs hanging on the left side and dark-blue eyes.
Karin is very engrossed into occult so she makes a club, going to such lengths as to blackmailing Takaaki Kouno to try and keep the club running.
- The name Karin means "flower, blossom" (花) (ka) and "pear" (梨) (rin).
- Karin's surname Sasamori means "Bamboo grass" (笹) (sasa) and "forest" (森) (mori).