[Beginner's Tutorial] I'm familiar with this place. Leave it to me!

If you have a perfect replay to clear a stage, you can utilize the Offline Auto-Challenge (aka "Omakase") feature. First, it calculates the time and win rate of this replay by running 10 battle simulations. Fewer turns mean less time spent, and a higher win rate means more rewards. In other words, you are now in a situation where you "need to achieve the highest possible win rate using the least amount of stamina and the minimum number of turns." The Offline Auto-Challenge feature consumes 20% more stamina than regular challenges and is consumed all at once when you press the battle start button. Also, consumed stamina is non-refundable even if you cancel the battle midway, so make your decision carefully. This feature does not affect the companion's EXP, mood, or affection. You can battle up to 999 times at once, and this feature can only be used for one stage at a time.