Mahou Shoujo Madoka★Magica, C: The Money of Soul and Possibility Control Recommendations
Both of the main protagonists are living a normal life in the early part of the series. They were offered something life changing that comes with a great cost.
both go though hard times while showing how they can get though wat come there way
They are both short and dark, with no actual protagonists or antagonists, merely people with different ethics. The ethics in C are very interesting, especially to apply to other situations. Like in Puella Magi Madoka Magica, the combat isn't the primary concern, with C spending more time analysing the consequences.