Wears a vibrant short-sleeved purple dress and a white frilled mob cap. She has blonde, shoulder-length hair. She usually acts as the voice of reason for Renko. She calls close friends like Renko by their names, but addresses others with polite honorifics. Relationship with Renko: Best friends in the same club. Renko calls her "Merry" because her full name, Maribel, is hard to pronounce. She possesses the ability to see boundaries. She shares many similarities with Yukari Yakumo in appearance and ability—is it just a coincidence? A member of the Hifuu Club. A university student in Kyoto. Age: 20

Wears a black hat with a white ribbon, a white shirt with a red tie, and a black skirt. She is the proactive one who usually drags Maribel Hearn along. She calls Maribel by the nickname "Merry." Relationship with Merry: Best friends in the same club. President of the Hifuu Club. Age: 20. Brown hair. A university student in Kyoto. She is frequently late. She has the ability to tell the current time just by looking at the stars, and her current location just by looking at the moon.

The form Maribel Hearn takes after becoming a yokai in Bad End 1 or Gensokyo End 2. Maribel Hearn = Yukari Yakumo. The Sage of Boundaries who created Gensokyo. Maribel Hearn's form after becoming a yokai. She has an elusive, suspicious personality and an otherworldly beauty. By manipulating boundaries, she can travel between the outside world and Gensokyo.