User blog comment:Dorayaki/Theory: Next generation of S4 and brands?/@comment-26426093-20161203054812/@comment-3487190-20161204142942

I also think Lily is serving a good role model as a senior and an advicer, which could make her a more influential being when she eventually becomes an S4. If Yume and Rola both follow their step in the student council, it'd be nice to see one become an S4 and one become the president in Year 3.

My theory is that Koharu's chance lays in Year 3 instead of Year 2. The fact given by the story is that Koharu is still not strong enough to beat down Mahiru IMO, and give her overseas study experience might help her alot.