Midori grew up with Tamako as a childhood friend and now sits beside her in class. She's also part of the baton club with her. Her grandparents run a toy shop in the local shopping district, and that's where she lives.
The thing about Midori is that she's got this protective streak when it comes to Tamako—she's always looking out for her, making sure she's okay. Over time, that need to take care of her has blurred into something deeper. Midori's never entirely sure if what she feels is just devotion to her best friend or something more like being in love.
Content compiled by AnimeList.moe from publicly available sources.