Megumi Ushino
About
She's Milk's older sister, and Asuma's classmate. She used to play often with Asuma during their childhood at the Shinto shrine, but lately she's been studious. The truth is, she is Asuma's first love.
(Source: Tsukumimi vol. 1, "Character Introductions")
She is not pregnant at the end of the story. She passes her university exam and will become a university student in the spring.