Nogizaka Rin

A calm girl who goes at her own pace, but is also mischievous and likes to play pranks. Calls the protagonist "Niini." She likes to flip Miruku's skirt every morning to check the pattern on her underwear.

An unparalleled lover of snacks. She has them hidden all over the place, and seems able to just grab some whenever she pleases. Her favorite candies are whiskey bonbons, but because they get her drunk and she ends up annoying people, she's not allowed to have them. (She still sneaks some from time to time however.)