Suddenly, a cheerful pink monster named Pupipo materializes out of nowhere. Although the family is bewildered by Pupipo's origin, they honor their promise to Wakaba and allow her to keep the new addition. Pupipo quickly becomes Wakaba's most loyal companion, protecting her from any dangers and helping her connect with a fellow student who shares her supernatural interests. Together, they stand up to bullying and bring brightness to Wakaba's life. Through Pupipo, Wakaba finally finds the friend she's always needed.