Kiruminzu  

Kiruminzuu, Kiruminzoo, キルミンずぅ

As they searched for their runaway cat, Riko and Rimu Mikogami stumbled upon a peculiar gadget that transformed them into "Kirumin". This device also granted them the ability to transform into actual animals. Not long after, their older sister Nagisa joined in on the fun. Together, the three embarked on adorable, amusing, and sometimes perilous escapades.