Hahahaha, Madoka is really a girl after my own heart.
This is from Hyakuen!, a new seinen manga about two high school girls trying to save up money together in order to fulfill their respective dreams. One is Madoka, the serious one and the other is the bokke type Momo, who keeps spending all her money despite her best intentions.
Only 2 chapters are out so far but I’m quite liking the chemistry between the two. Hope to see more chapters coming out soon.