I didn't translate the game at all. Does she flush the babies?
No, the mascot character teleports them to the demon world.
There's not really any game here. The "quick time event" battles may as well just be replaced with a choice saying "win the fight" or "lose the fight". It's basically a CYOA with a few branches.....
End 1: Lose every battle, then choose not to read the diary to the end. (Doesn't seem to unlock properly?). Pregnant girl.
End 2: Lose every battle, then choose to read the diary to the end. Pregnant former magical girl.
End 3: Win every battle except the last one; run away from the demon king. Ordinary girl.
End 4: Lose at least one battle, but defeat the demon king. Magical girl with scars.
End 5: Win every battle. Invincible magical girl.
(I think you don't strictly need to win/lose every battle for the first three, but it's probably easier).