If i'm not wrong being an idol isn't all happy and merry, so yuriko wanting for tatara to wait for her 10 years is just raising flags all over the place that i personally like to stay away from (unless i'm in the mood for some of that sh*t stuff).
Point is, as of now i just hope tatara goes with the jk twin and he doesn't go "Kanojo, Okarishimasu" 's MC route.
Edit: Ignore the 10 year, thx for Goku23 for pointing it out.