Whenever an incident occurs, there is one person who has nothing better to do than picking on her Junior that appears like an old boy from a club and sticks her nose into other people's business.

That is grandma Yukari. She's supposed to be around the greatest youkai in Gensoukyou but-

Because of the fact that her face is super gross and that her feet smell like the king of dehiscence, her popularity level is enough to make even her feel bad for herself.

Even the normally cheerful and bright Reimu apparently does not like remembering times when she solved incidents with grandma Yukari.