Why doesn't Meiya get an ending?

Depending on the choices made after Marimo-chan dies, the scene where Takeru is transported back to the Extra world for the final time has 5 different variations. Four of these (Chizuru's, Tama's, Mikoto's, and Kei's) are simply letters from the girl you picked in those two choices after the aforementioned event, but if you chose Meiya, then you get a confession from Yashiro instead as you say goodbye. Why is it that Meiya, who seems to be the canon runner-up girl behind Sumika, doesn't get her own special ending in Alternative?