A Monster's Scent! Chanela Steals Love
Scent of a Monster: Chanela Will Steal Your Love
Yoma no kaori! Shanera wa ai wo nusum
"Usagi asks her family if they can officially keep Luna as a pet, but her little brother Shingo strongly objects due to his fear of cats. Instead, Shingo brings home a pet Chanela, a creature that smells like perfume. Shingo becomes so absorbed in the Chanela that he stops going to school, which worries Usagi." (source)