Pet Human

Mana, Karina, Naoto, and Yuuki are childhood friends and ordinary high school students. They believed that their ordinary days would continue on in life, until one day Karina brought home a four-legged "pet human"... The new family member they were introduced to was an 8-year-old boy with restraints on his hands and feet and a collar. He looked just like them, but somehow animalistic and completely different... This is a world where humans are allowed to keep "pet humans". However, the next day, they received the shocking news that Yuuki was a "pet human"!